NG -- REPLACE PNEUMATIC W/TUBE TANK ASSEMBLY
OK -- REPLACE SUSPENSION CONTROL ECU
From 08/2009
SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1762: Continuous Electric Current to Exhaust Solenoid
C1762 - Continuous Electric Current to Exhaust Solenoid
DESCRIPTION
The exhaust valve built into the height control compressor assembly opens to discharge compressed air from the pneumatic cylinders into the
atmosphere according to the signal from the suspension control ECU.
INSPECTION PROCEDURE
NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first See:
C1782.
- 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. CUSTOMER PROBLEM ANALYSIS
(a) Ask the customer about the vehicle and usage conditions when the DTC was stored.
HINT
DTC C1762 can be stored under unusual vehicle or usage conditions.
NEXT -- Continue to next step.
2. CHECK DTC
(a) Clear the DTC See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(b) Start the engine and wait for 3 minutes or more.
(c) Select luggage mode.
(d) Select HI mode.
(e) Check the DTC See: Steering and Suspension/Suspension/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
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