Toyota Avalon (XX50): Grille Shutter System

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Exterior / Exterior Panels / Trim / Grille Shutter System

Shutter Control State Maintenance Mode (B1333)

DESCRIPTION

This DTC is stored when the grille shutter system is changed to maintenance mode.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1333	Shutter Control State Maintenance Mode	The grille shutter system is changed to maintenance mode.	Swing grille actuator assembly

CAUTION / NOTICE / HINT

NOTICE:

If the swing grille actuator assembly has been replaced with a new one, perform initialization and change the grille shutter control mode.

Click here

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Grill Shutter > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Grill Shutter > Trouble Codes

OK:

DTC B1333 is not output.

USE SIMULATION METHOD TO CHECK

3.	CHANGE GRILLE SHUTTER CONTROL MODE

(a) Change the grille shutter control mode to normal mode.

Click here

4.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Grill Shutter > Trouble Codes

OK:

DTC B1333 is not output.

END (GRILLE SHUTTER CONTROL MODE WAS NOT CHANGED)

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

Data List / Active Test

DATA LIST / ACTIVE TEST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

DATA LIST

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Grille Shutter / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Grill Shutter > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Shutter Operation State	Grille shutter operation state	Standby, Open, Close or Prohibit	Standby: Grille shutter in standby mode Open: Grille shutter opening Close: Grille shutter closing Prohibit: Grille shutter operation disabled	-
Shutter Control State	Grille shutter control state	Normal or Maintenance	Normal: Normal mode Maintenance: Maintenance mode	-
Close Motor Lock	Motor lock detection state during grille shutter closing operation	Undetected or Detected	Undetected: Motor lock not detected during closing operation Detected: Motor lock detected during closing operation	Displays statu of last closing operation
Open Motor Lock	Motor lock detection state during grille shutter opening operation	Undetected or Detected	Undetected: Motor lock not detected during opening operation Detected: Motor lock detected during opening operation	Displays statu of last opening operation
+B Power Voltage	Auxiliary battery voltage	Min.: 0.8 V, Max.: 20 V	11 to 14 V	-
Last Operation Direction	Direction of last grille shutter operation	Unknown, Open or Close	Unknown: Direction of last grille shutter operation unknown Open: Last grille shutter operation was in opening direction Close: Last grille shutter operation was in closing direction	-
Shutter Operation Initialization Result	Result of grille shutter system initialization	OK or NG	OK: Initialization was completed successfully NG: Initialization was not completed successfully	-
Shutter Operation Half-Open Result for Active Test	Result of Active Test Shutter Half-Open Operation	OK or NG	OK: Operation is normal NG: Operation is abnormal	-
Shutter Operation Lock Detection Result for Active Test	Result of Active Test Shutter Closing Operation Lock Detection and Shutter Opening Operation Lock Detection	Normal, Open Error or Close Error	Normal: Normal lock detected Open Error: Lock detected in abnormal position while performing Active Test Shutter Opening Operation Lock Detection Close Error: Lock detected in abnormal position while performing Active Test Shutter Closing Operation Lock Detection	-
Shutter Operation Fixed Length Result for Active Test	Result of Active Test Shutter Closing Operation Fixed Length and Shutter Opening Operation Fixed Length	Normal, Open Error or Close Error	Normal: Normal operation length Open Error: Abnormal operation length while performing Active Test Shutter Opening Operation Fixed Length Close Error: Abnormal operation length while performing Active Test Shutter Closing Operation Fixed Length	-
Shutter Operation Mode	Grille shutter operation mode	Normal Mode, Change Sleep Mode, Sleep Mode or Release Sleep Mode	Normal Mode: Normal mode Change Sleep Mode: Winter control transition mode Sleep Mode: Winter control mode Release Sleep Mode: Winter control cancel mode	-
Last Operation Pulse Value	Number of pulses of last grille shutter operation	0 to 65535 edge	Between 0 to 65535 edge	-
Current Position	Current grille shutter position	0 to 65535 edge	Between 0 to 65535 edge	-
Maximum Open Position	Grille shutter open position	0 to 65535 edge	Between 0 to 65535 edge	-
Maximum Close Position	Grille shutter closed position	0 to 65535 edge	Between 0 to 65535 edge	-
Shutter Initialization	Grille shutter system initialization	Incomplete or Complete	Incomplete: Grille shutter system initialization has not been completed Complete: Grille shutter system initialization has been completed	-
End Shaft SW	End shaft switch state	Unset, Fully Open Position, Fully Closed Position or Half Open Position	Unset: Grille shutter position unknown Fully Open Position: Grille shutter in fully open position Fully Closed Position: Grille shutter in fully closed position Half Open Position: Grille shutter between fully open and fully closed position	-
Ambient Temperature	Ambient Temperature	-78.75 to 78.125°C	Actual ambient temperature displayed (in °C)	-
Regulator Pressure Sensor	Refrigerant pressure	0.0147 to 3.7450 MPa	Actual refrigerant pressure displayed (in MPa)	-
Engine Coolant Temperature	Engine coolant temperature	16 to 127°C	Actual engine coolant temperature displayed (in °C)	-
Code Clear Request Flag	Reception condition of DTC clear request signal to the grille shutter ECU from the ECM	0 or 1	0: Not receiving DTC clear request signal 1: Receiving DTC clear request signal	-
Driving Cycle Change Flag	Reception condition of driving cycle transition signal from ECM*	0 or 1	0: Not receiving driving cycle transition signal 1: Receiving driving cycle transition signal	Not applicable
IG SW	Power switch	0 or 1	0: Power switch off or on (ACC) 1: Power switch on (IG)	-
HV Control Coolant Temperature	Inverter coolant temperature	16 to 127°C	Actual inverter coolant temperature displayed (in °C)	-
Shutter Open Request	Reception condition of grille shutter open request signal from hybrid vehicle control ECU assembly	0 or 1	0: Not receiving grille shutter open request signal 1: Receiving grille shutter open request signal	-
HV Control Coolant Temperature Error Flag	Inverter coolant temperature sensor condition sent from hybrid vehicle control ECU assembly	0 or 1	0: Inverter coolant temperature sensor is normal 1: Inverter coolant temperature sensor is malfunctioning	-
Vehicle Speed	Vehicle speed	0 to 255 km/h	Actual vehicle speed displayed (in km/h)	-
Number of DTC	Number of DTCs currently stored	0 to 255	Number of DTCs will be displayed	-

*: Although the item is displayed on the Techstream, it is not applicable to this vehicle.

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

ACTIVE TEST

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Grille Shutter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Grill Shutter > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Shutter Closing Operation Lock Detection	Function to perform a closing operation until motor lock is detected and the motor stops	OFF/Close	-
Shutter Opening Operation Lock Detection	Function to perform an opening operation until motor lock is detected and the motor stops	OFF/Open	-
Shutter Closing Operation Fixed Length	Function to perform a closing operation until motor lock is detected or the motor operates a specified amount	OFF/Close	-
Shutter Opening Operation Fixed Length	Function to perform an opening operation until motor lock is detected or the motor operates a specified amount	OFF/Open	-
Shutter Half-Open Operation	Function to perform an opening or closing operation until the grille shutter reaches the half open position	OFF/ON	-

Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) Grille shutter system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

CHECK DLC3

(a) Check the DLC3.

Click here

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery.

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Grille Shutter System

DTC No.	Detection Item	Link
B1333	Shutter Control State Maintenance Mode
P059F73	Active Grille Air Shutter "A" Actuator Stuck Closed
P05A072	Active Grille Air Shutter "A" Actuator Stuck Open
P05A074	Active Grille Air Shutter "A" Actuator Slipping
P05A211	Active Grille Air Shutter "A" Circuit Short to Ground
P05A212	Active Grille Air Shutter "A" Circuit Short to Battery
P05A213	Active Grille Air Shutter "A" Circuit Open
P05A27E	Active Grille Air Shutter "A" Actuator Stuck On
P05A27F	Active Grille Air Shutter "A" Actuator Stuck Off
P05B112	Active Grille Air Shutter "B" Circuit Short to Battery
P05B114	Active Grille Air Shutter "B" Circuit Short to Ground or Open
P05B131	Active Grille Air Shutter "B" No Signal
U129387	Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message

Dtc Check / Clear

DTC CHECK / CLEAR

CHECK DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / (desired system) / Trouble Codes.

Body Electrical > Grill Shutter > Trouble Codes Powertrain > Engine > Trouble Codes

(e) Check the details of the DTC(s).

Click here

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / (desired system) / Clear DTCs.

Body Electrical > Grill Shutter > Clear DTCs Powertrain > Engine > Clear DTCs

(e) Clear the DTCs.

Grille Shutter does not Operate

DESCRIPTION

The swing grille actuator assembly receives signals from the ECM, hybrid vehicle control ECU assembly and air conditioning amplifier assembly via CAN communication. Based on these signals, the swing grille actuator assembly operates the radiator shutter sub-assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before performing troubleshooting, change the grille shutter control mode to maintenance mode.
Click here
If the swing grille actuator assembly has been replaced with a new one, perform initialization and change the grille shutter control mode.
Click here

PROCEDURE

1.	CHECK FOR FOREIGN OBJECT

(a) Check that the radiator shutter sub-assembly is free of foreign matter and ice.

OK:

The radiator shutter sub-assembly is free of foreign matter and ice.

FOREIGN OBJECT (REMOVE FOREIGN MATTER AND/OR ICE)

2.	CHECK HARNESS AND CONNECTOR (RADIATOR SHUTTER SUB-ASSEMBLY - POWER SUPPLY AND BODY GROUND)

(a) Disconnect the A41 radiator shutter sub-assembly connector.

*a	Front view of wire harness connector (to Radiator Shutter Sub-assembly)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
A41-4 - Body ground	Power switch off	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
A41-1 - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT RADIATOR SHUTTER SUB-ASSEMBLY

(a) Disconnect the z17 radiator shutter sub-assembly connector.

*a	Component without harness connected (Radiator Shutter Sub-assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A41-4 - z17-1 (+B)	Always	Below 1 Ω
A41-4 or z17-1 (+B) - Body ground	Always	10 kΩ or higher
A41-1 - z17-3 (GND)	Always	Below 1 Ω
A41-1 or z17-3 (GND) - Body ground	Always	10 kΩ or higher

REPLACE RADIATOR SHUTTER SUB-ASSEMBLY

4.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Grill Shutter / Active Test.

(e) According to the display on the Techstream, perform the Active Test to open and close the grille shutter.

Body Electrical > Grill Shutter > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Shutter Closing Operation Lock Detection	Function to perform a closing operation until motor lock is detected and the motor stops	OFF/Close	-
Shutter Opening Operation Lock Detection	Function to perform an opening operation until motor lock is detected and the motor stops	OFF/Open	-

Body Electrical > Grill Shutter > Active Test

Tester Display
Shutter Closing Operation Lock Detection

Body Electrical > Grill Shutter > Active Test

Tester Display
Shutter Opening Operation Lock Detection

(f) Enter the following menus: Body Electrical / Grill Shutter / Data List.

(g) Read the Data List according to the display on the Techstream.

Body Electrical > Grill Shutter > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Shutter Operation Lock Detection Result for Active Test	Result of Active Test Shutter Closing Operation Lock Detection and Shutter Opening Operation Lock Detection	Normal, Open Error or Close Error	Normal: Normal lock detected Open Error: Lock detected in abnormal position while performing Active Test Shutter Opening Operation Lock Detection Close Error: Lock detected in abnormal position while performing Active Test Shutter Closing Operation Lock Detection

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Shutter Operation Lock Detection Result for Active Test

Result of Active Test Shutter Closing Operation Lock Detection and Shutter Opening Operation Lock Detection

Normal, Open Error or Close Error

Normal: Normal lock detected

Open Error: Lock detected in abnormal position while performing Active Test Shutter Opening Operation Lock Detection

Close Error: Lock detected in abnormal position while performing Active Test Shutter Closing Operation Lock Detection

Body Electrical > Grill Shutter > Data List

Tester Display
Shutter Operation Lock Detection Result for Active Test

OK:

"Normal" is displayed on the Techstream.

USE SIMULATION METHOD TO CHECK

5.	CHECK RADIATOR SHUTTER SUB-ASSEMBLY

(a) Remove the radiator shutter sub-assembly.

Click here

(b) Remove the swing grille actuator assembly.

Click here

OK:

The radiator shutter sub-assembly moves smoothly.

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

REPLACE RADIATOR SHUTTER SUB-ASSEMBLY

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the grille shutter system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points for problem analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

4.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM (for HV Model)

5.	CHECK FOR DTC* (SFI SYSTEM)

(a) Check for DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO SFI SYSTEM

6.	CHECK FOR DTC* (GRILLE SHUTTER SYSTEM)

(a) Check for DTCs.

Body Electrical > Grill Shutter > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

GO TO STEP 9

8.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

9.	REPAIR OR REPLACE

10.	CHECK FOR DTC* (GRILLE SHUTTER SYSTEM)

(a) Check for DTCs.

Body Electrical > Grill Shutter > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

END

GO TO DIAGNOSTIC TROUBLE CODE CHART

Initialization

INITIALIZATION

CHANGE GRILLE SHUTTER CONTROL MODE AND/OR PERFORM INITIALIZATION

(a) In the following situations, it is necessary to change the grille shutter control mode and/or initialize the grille shutter system.

	Change Control Mode (Normal Mode → Maintenance Mode)	Change Control Mode (Maintenance Mode → Normal Mode)	Initialize
Before removing the swing grille actuator assembly and radiator shutter sub-assembly	○	-	-
When the swing grille actuator assembly has been replaced with a new one	-	○	○
After installing the swing grille actuator assembly and radiator shutter sub-assembly	-	○	○
Before troubleshooting	○	-	-
After troubleshooting	-	○	-

NOTICE:

In order to ensure safety, before performing troubleshooting or removing the swing grille actuator assembly or radiator shutter sub-assembly, change the grille shutter control mode to maintenance mode.

HINT:

When the grille shutter system is in maintenance mode, the grille shutter will not operate when operation signals are received.
When driving the vehicle to change the grille shutter control mode and/or perform initialization, make sure the grille shutter system is in maintenance mode. Initialization cannot be performed and the grille shutter control mode cannot be changed by driving the vehicle if the grille shutter system is in normal mode.

WHEN USING TECHSTREAM

(a) Change the control mode to maintenance mode.

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter following menus: Body Electrical / Grill Shutter / Utility.

Body Electrical > Grill Shutter > Utility

Tester Display
Grill Shutter Control Mode Switching

(5) According to the display on the Techstream, change the grille shutter control mode from normal mode to maintenance mode.

(b) Change the control mode to normal mode

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter following menus: Body Electrical / Grill Shutter / Utility.

Body Electrical > Grill Shutter > Utility

Tester Display
Grill Shutter Control Mode Switching

(5) According to the display on the Techstream, change the grille shutter control mode from maintenance mode to normal mode.

(6) Check for DTCs and make sure that DTC B1333 is not output.

Body Electrical > Grill Shutter > Trouble Codes

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter following menus: Body Electrical / Grill Shutter / Utility.

Body Electrical > Grill Shutter > Utility

Tester Display
Grill Shutter Initialization

(5) According to the display on the Techstream, perform initialization.

WHEN DRIVING THE VEHICLE

HINT:

When changing the grille shutter control mode and/or performing initialization by driving the vehicle, the grille shutter control mode can only be changed and initialization can only be performed if the grille shutter system is in maintenance mode.

(a) Turn the power switch on (READY).

(b) Drive the vehicle at speed of 5 km/h (3 mph) or more. The grille shutter control mode will be changed and initialization will be performed automatically when the vehicle speed exceeds 5 km/h (3 mph).

Body Electrical > Grill Shutter > Trouble Codes

Parts Location

PARTS LOCATION

ILLUSTRATION

*1	SWING GRILLE ACTUATOR ASSEMBLY	*2	RADIATOR SHUTTER SUB-ASSEMBLY
*3	ECM	-	-

ILLUSTRATION

COMBINATION METER ASSEMBLY

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

- ECU-B NO. 2 FUSE

AIR CONDITIONING AMPLIFIER ASSEMBLY

HYBRID VEHICLE CONTROL ECU ASSEMBLY

DLC3

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.

System Name	See Procedure
Lane Departure Alert System (w/ Steering Control)
Intelligent Clearance Sonar System
Parking Assist Monitor System
Panoramic View Monitor System
Pre-collision System
Lighting System (for HV Model with Cornering Light)

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

Before performing troubleshooting, change the grille shutter control mode to maintenance mode.
Click here
If the swing grille actuator assembly has been replaced with a new one, perform initialization and change the grille shutter control mode.
Click here

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Symptom	Suspected Area	Link
Grille shutter does not operate	Proceed to "Grille Shutter does not Operate"
Abnormal noise occurs during grille shutter operation	Check for ice, etc. around the shutters and links	-
	Swing grille actuator assembly
	Radiator shutter sub-assembly

System Description

SYSTEM DESCRIPTION

GRILLE SHUTTER SYSTEM

(a) General description

If a malfunction occurs in the grille shutter system, a warning will be displayed on the multi-information display and grille shutter system operation will be disabled.

(b) Control List

Control	Description
Closing Operation Control	The grille shutter closes when certain conditions related to the vehicle speed, engine coolant temperature, inverter coolant temperature, ambient temperature and refrigerant pressure are met.
Opening Operation Control	The grille shutter opens when certain conditions related to the vehicle speed, engine coolant temperature, inverter coolant temperature, ambient temperature and refrigerant pressure are met.
Power Switch Off-linked Opening Operation Control	Opens the grille shutter when the power switch is turned off in order to prevent the grille shutter from becoming stuck closed while the vehicle is stopped.
Winter Control Mode	Stops the grille shutter at a position other than the fully closed position and suspends grille shutter operation in order to prevent it from becoming stuck closed when the ambient temperature is 5°C (41°F) or lower. Winter control mode is canceled when the ambient temperature becomes 10°C (50°F) or higher.

System Diagram

SYSTEM DIAGRAM

Terminals Of Ecu

TERMINALS OF ECU

CHECK SWING GRILLE ACTUATOR ASSEMBLY

(a) Disconnect the z17 swing grille actuator assembly connector.

(b) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
z17-1 (+B) - Body ground	LA-G - Body ground	Auxiliary battery power supply	Power switch off	11 to 14 V
z17-3 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

Front Pillar Upper Cover

Grille Shutter

See More:

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