Air Suspension System (w/ AVS)

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): C1793: Height Control Off Switch Circuit
C1793 - Height Control Off Switch Circuit

DESCRIPTION

Height control can be operated or suspended by pressing the height control mode select switch.

By pressing the switch once, height control can be suspended.

By pressing the switch one more time, height control can be operated.





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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (MANUAL MODE 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 pressing the height control mode select switch.

OK:

Height control mode select 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 Air Suspension System (w/ AVS)
A -- Continue to next step.

2. INSPECT HEIGHT CONTROL MODE SELECT SWITCH

(a) Turn the ignition switch off.

(b) Remove the height control mode select switch.





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

Standard Resistance:





NG -- REPLACE HEIGHT CONTROL MODE SELECT SWITCH
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL MODE SELECT SWITCH - ECU AND BODY GROUND)

(a) Disconnect the O17 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