INSPECTION PROCEDURE
NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled
Systems/How To Proceed With Troubleshooting; 2) DTC inspection See: Steering and Suspension/Suspension/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes; and 3) Techstream inspection (Data List or Active Test) See:
Steering and Suspension/Suspension/Testing and Inspection/Scan Tool Testing and Procedures. If no malfunctions are found
in other areas, replace the suspension control ECU.
- If the suspension control ECU is replaced, the vehicle height offset calibration and registration of vehicle identification
information must be performed See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Testing and Inspection/Calibration and See: Steering and Suspension/Suspension/Suspension Control ( Automatic -
Electronic )/Testing and Inspection/Registration)
PROCEDURE
1. INSPECT HEIGHT CONTROL OFF SWITCH
(a) Disconnect the height control OFF switch connector.
(b) Measure the resistance according to the values in the table below.
Standard resistance:
Text in Illustration
NG -- REPLACE HEIGHT CONTROL OFF SWITCH
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL OFF SWITCH - ECU AND BODY GROUND)
(a) Disconnect the A56 ECU connector.
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