Downhill Assist Control Indicator Light Does Not Come On
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Downhill Assist Control Indicator Light does not Come ON
Downhill Assist Control Indicator Light does not Come ON
DESCRIPTION
Refer to the description of "Downhill Assist Control Indicator Light Remains ON" Downhill Assist Control Indicator Light Remains On.
WIRING DIAGRAM
Refer to the downhill assist control indicator light circuit Downhill Assist Control Indicator Light Remains On.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication system DTC is output Diagnosis System.
Result
B -- REPAIR CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. READ VALUE USING TECHSTREAM (DOWNHILL ASSIST CONTROL SWITCH)
(a) Check the Data List for proper functioning of the downhill assist control switch.
ABS / VSC / TRAC:
OK:
ON (downhill assist control switch is ON) appears on the screen.
NG -- INSPECT DOWNHILL ASSIST CONTROL SWITCH
OK -- Continue to next step.
3. PERFORM ACTIVE TEST USING TECHSTREAM (DOWNHILL ASSIST CONTROL INDICATOR LIGHT)
(a) Select the Active Test, generate a control command, and then check that the downhill assist control indicator light operates.
ABS / VSC / TRAC:
OK:
The downhill assist control indicator light turns ON and OFF.
OK -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY
NG -- Continue to next step.
4. INSPECT COMBINATION METER
(a) Inspect the combination meter How To Proceed With Troubleshooting.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY
5. INSPECT DOWNHILL ASSIST CONTROL SWITCH
(a) Remove the downhill assist control switch.
(b) Measure the resistance of the switch.
Standard resistance:
NG -- REPLACE DOWNHILL ASSIST CONTROL SWITCH
OK -- Continue to next step.
6. CHECK WIRE HARNESS (CONTROL SWITCH - SKID CONTROL ECU AND BODY GROUND)
(a) Disconnect the A19 ECU connector.
(b) Disconnect the E31 switch connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY