Height Control OFF Indicator Light Circuit

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: Height Control OFF Indicator Light Circuit

Height Control OFF Indicator Light Circuit

DESCRIPTION

If the suspension control ECU detects a problem, the height control OFF indicator light comes on while suspending the height control function at the same time. At the same time, the suspension control ECU records a DTC in the memory.
Connect terminals TC and CG of the DLC3 to make the height control manual indicator light blink and output DTCs.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT HEIGHT CONTROL OFF INDICATOR LIGHT
(a) Turn the ignition switch to the ON position.
(b) Check that the height control manual indicator light comes on.
OK:
Height control manual indicator light comes on, and then goes off after 2 seconds.

NG -- GO TO COMBINATION METER SYSTEM
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - COMBINATION METER)
(a) Check for open and short circuit in the harness and the connector between the suspension control ECU and the combination meter Electronic Circuit Inspection Procedure.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SUSPENSION CONTROL ECU
3. CHECK CONNECTORS
(a) Check that the connectors are properly connected to the suspension control ECU.
OK:
The connectors are properly connected.

NG -- CONNECT CONNECTORS
OK -- Continue to next step.

4. CHECK DTC
(a) Clear and check the DTC Reading and Clearing Diagnostic Trouble Codes.
Result:





NG -- REPAIR CIRCUIT INDICATED BY OUTPUT DTC
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - COMBINATION METER)
(a) Check for open and short circuit in the harness and the connector between the suspension control ECU and the combination meter Electronic Circuit Inspection Procedure.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SUSPENSION CONTROL ECU