SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1799: Luggage Room Mode Switch Circuit (Test Mode DTC)
C1799 - Luggage Room Mode Switch Circuit (Test Mode DTC)
DESCRIPTION
Pressing the height control switch (luggage compartment) for approximately 1 second switches modes. This switch can be operated with the engine
on or off, the shift lever in P and the back door open. When the engine switch is off, this switch can be only be used to lower the vehicle height. If
the switch is pressed while the vehicle height is changing, vehicle height control will be cancelled.
WIRING DIAGRAM
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.
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