C1791

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1791: Absorber Control Switch Circuit (Test Mode DTC)
C1791 - Absorber Control Switch Circuit (Test Mode DTC)

DESCRIPTION

The absorber control switch is used to select the damping force mode of the shock absorber.





HINT
This DTC is output only when the sensor signal check is done.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (ABSORBER CONTROL SWITCH)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON, and turn the Techstream main switch on.

(d) Enter the following menus: Chassis / Air suspension / Data List.

Air Suspension





(e) Check that the value displayed on the Techstream changes by operating the absorber control switch "COMFORT" or "SPORT".

OK:

Absorber control switch value changes.

Result





C -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
A -- Continue to next step.

2. INSPECT ABSORBER CONTROL SWITCH

(a) Turn the ignition switch off.





(b) Remove the absorber control switch.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPLACE ABSORBER CONTROL SWITCH Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (ABSORBER CONTROL SWITCH - ECU AND BODY GROUND)

(a) Disconnect the O18 ECU connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE SUSPENSION CONTROL ECU Removal