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 SWITCH (LUGGAGE COMPARTMENT)
(a) Disconnect the height control switch (luggage compartment) connector.
(b) Measure the resistance according to the values in the table below.
Standard resistance:
Text in Illustration
NG -- REPLACE HEIGHT CONTROL SWITCH (LUGGAGE COMPARTMENT) See: Sensors and Switches/Sensors and
Switches - Steering and Suspension/Sensors and Switches - Suspension/Suspension Mode Switch/Service and Repair/Height Control
Switch (for Luggage Compartment)/Removal
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - HEIGHT CONTROL SWITCH)
(a) Disconnect the A56 ECU connector.
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