Problem Symptoms Table
WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS TABLE - CRUISE CONTROL SYSTEM
| Symptom | Suspect Area |
|---|---|
| Main switch cannot be turned ON. (Indicator light on the combination meter does not come on.) |
|
| Speed setting cannot be done. (Indicator light on the combination meter comes on when the main switch is turned ON, but goes off when operating 'SET' function.) |
|
| Speed setting cannot be done. (Indicator light on the combination meter comes on when the main switch is turned ON and it remains ON, while operating 'SET' function.) |
|
| While cruise control driving, the set speed is canceled. (Indicator light remains ON.) |
|
| Hunting occurs. (Speed is not constant.) |
|
| Speed setting cannot be canceled. ('CANCEL' function failure ONLY) |
|
| DTC is not output, or is output when should not be. |
|
| CRUISE MAIN indicator light does not come on. |
|
DTC INDEX
| DTC | Description |
|---|---|
| DTC P0500/21, P0503/23 | VEHICLE SPEED SENSOR "A", VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH |
| DTC P0571/52 | BRAKE SWITCH "A" CIRCUIT |
| DTC P0607/54 | CONTROL MODULE PERFORMANCE |