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
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DOWNHILL ASSIST CONTROL INDICATOR LIGHT
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Ground terminal HDCW of the skid control ECU.
(d) Check downhill assist control indicator light.
OK:
(e) Turn the ignition switch to OFF.
(f) Reconnect the skid control ECU connector.
NG -- CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - DOWNHILL ASSIST CONTROL SWITCH)
OK -- Continue to next step.
2. INSPECT DOWNHILL ASSIST CONTROL SWITCH
(a) Remove the downhill assist control switch.
(b) Disconnect the downhill assist control switch connector.
(c) Measure the resistance.
Standard:
(d) Reconnect the downhill assist control switch connector.
(e) Reinstall the downhill assist control switch connector.
NG -- REPLACE DOWNHILL ASSIST CONTROL SWITCH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - DOWNHILL ASSIST CONTROL SWITCH)
(a) Disconnect the skid control ECU connector.
(b) Disconnect the downhill assist control switch connector.
(c) Measure the resistance.
Standard:
(d) Reconnect the downhill assist control switch connector.
(e) Reconnect the skid control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MASTER CYLINDER SOLENOID
4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)
(a) Disconnect the skid control ECU connector.
(b) Disconnect the combination meter connector.
(c) Measure the resistance.
Standard:
(d) Reconnect the combination meter connector.
(e) Reconnect the skid control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. INSPECT COMBINATION METER ASSEMBLY
(a) Check the combination meter system (Problem Symptoms Table).
OK:
Combination meter is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- CHECK FOR INTERMITTENT PROBLEMS