DESCRIPTION
The cruise control main switch outputs the on/off signal and various control signals to the power management control ECU.
The power management control ECU performs cruise control according to the signals received from the cruise control main switch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.
PROCEDURE
READ VALUE USING GTS
| *a | ON/OFF |
| *b | -/SET |
| *c | +/RES |
| *d | CANCEL |
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Cruise Control / Data List.
Check the Data List to confirm proper function of the Cruise control main switch.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Cancel Switch | CANCEL switch status | ON or OFF | ON: CANCEL switch on OFF: CANCEL switch off |
- |
| -SET Switch | -SET switch status | ON or OFF | ON: -SET switch on OFF: -SET switch off |
- |
| +RES Switch | +RES switch status | ON or OFF | ON: +RES switch on OFF: +RES switch off |
- |
| Cruise Main Switch Operation Condition | Cruise control main switch (ON/OFF button) status | ON or OFF | ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed |
- |
| OK |
|---|
| When the Cruise control main switch is operated, the display changes as shown above. |
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here |
| NG |
|
INSPECT CRUISE CONTROL MAIN SWITCH
Remove the cruise control main switch.
Inspect the cruise control main switch.
| NG |
|
REPLACE CRUISE CONTROL MAIN SWITCH Click here |
| OK |
|
INSPECT STEERING PAD SWITCH ASSEMBLY
Remove the steering pad switch assembly.
Inspect the steering pad switch assembly.
| NG |
|
REPLACE STEERING PAD SWITCH ASSEMBLY Click here |
| OK |
|
CHECK SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY
Remove the spiral cable with sensor sub-assembly.
Inspect the spiral cable with sensor sub-assembly.
| NG |
|
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - POWER MANAGEMENT CONTROL ECU AND BODY GROUND)
Disconnect the H30 spiral cable with sensor sub-assembly connector.
Disconnect the H4 power management control ECU connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| OK |
|
REPLACE POWER MANAGEMENT CONTROL ECU Click here |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |