- Height control mode select switch
- Wire harness or connector
- Suspension control ECU
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Suspension | Section: Suspension Control System | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000001N9900AX |
| Title: SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DESCRIPTION (2008 Sequoia) | ||
|
DTC |
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.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
C1793 |
Height control mode select switch signal does not change. |
|
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
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Manual Mode Switch |
Height control mode select switch (Manual)/ ON or OFF |
ON: Height control mode select switch ON condition OFF: Height control mode select switch OFF condition |
- |
(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
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK (When troubleshooting according to the Problem Symptoms Table) |
B |
|
OK (When troubleshooting according to the DTC Chart) |
C |
|
|
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:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 (E) - 6 (MSW) |
Free |
10 kΩ or higher |
|
3 (E) - 6 (MSW) |
Pushed in |
Below 1 Ω |
|
|
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:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H73-6 (MSW) - O17-24 (TD) |
Always |
Below 1 Ω |
|
H73-3 (E) - Body ground |
Always |
Below 1 Ω |
|
H73-6 (MSW) or O17-24 (TD) - Body ground |
Always |
10 kΩ or higher |
|
|
|