Dtc C1794 Height Control Off Switch Circuit (Test Mode Dtc)
Suspension. Land Cruiser. Urj200, 202 Grj200 Vdj200
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT SUSPENSION CONTROL SWITCH (HEIGHT CONTROL OFF SWITCH)
CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - SWITCH AND BODY GROUND)
DTC C1794 Height Control OFF Switch Circuit (Test Mode DTC) |
DESCRIPTION
This is the height control system main switch. When the height control switch is pushed, the height control OFF indicator light lights up and height control turns off.The off condition of the height control will not be canceled until the height control switch is pushed again or the vehicle is driven.DTC Code
| Detection Condition
| Trouble Area
|
C1794
| The test mode procedure is performed.
| - Harness or connector
- Suspension control switch (Height control OFF switch)
- Suspension control ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed (Click here).
| 1.INSPECT SUSPENSION CONTROL SWITCH (HEIGHT CONTROL OFF SWITCH) |
Remove the suspension control switch (Click here).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
9 (N) - 16 (E)
| Height control OFF switch is pushed.
| Below 1 Ω
|
Height control OFF switch is not pushed.
| 10 kΩ or higher
|
| 2.CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - SWITCH AND BODY GROUND) |
Disconnect the K34 ECU connector.
Disconnect the V4 switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
K34-11 (TD) - V4-9 (N)
| Always
| Below 1 Ω
|
K34-11 (TD) - Body ground
| Always
| 10 kΩ or higher
|
V4-16 (E) - Body ground
| Always
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
