Using Jumper Wire
WARNING: This page is about a different car, the 2000 Lexus SC 400, 2000 Lexus SC 300, 2000 Lexus LS 400, 2000 Lexus GS 400, and 2000 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition on. Turn cruise main switch on. If CRUISE indicator light illuminates, leave ignition on and go to next step. If CRUISE indicator light does not illuminate, check CRUISE indicator light circuit. See appropriate INSTRUMENT PANELS article.
- To retrieve DTCs, turn cruise main switch off. Ensure ignition is on. On LS400, connect Jumper Wire (09843-18020) between terminals Tc and E1 of Data Link Connector 1 (DLC1) located on top left side of engine. See Fig 1. On SC300 and SC400, connect Jumper Wire (09843-18020) between terminals Tc and E1 of Data Link Connector 2 (DLC2), located on left side of engine compartment. See Fig 2. On GS300 and GS400, connect Jumper Wire (09843-18020) between terminals Tc and E1 of Data Link Connector 1 (DLC1) located in engine compartment, forward of left strut tower. See Fig 1.
- On all models, observe CRUISE indicator light for DTC display and check as follows:
- If CRUISE indicator light does not illuminate, see appropriate INSTRUMENT PANELS article.
- If CRUISE indicator light flashes steadily, no DTCs are set ("normal" DTC).
- If CRUISE indicator light flashes DTCs, see DIAGNOSTIC TROUBLE CODE (DTC) DEFINITION table. Go to appropriate DTC under DIAGNOSTIC TESTS .
After checking for DTCs, disconnect jumper wire and turn ignition off.
DIAGNOSTIC TROUBLE CODE (DTC) DEFINITION
| Scan Tool DTC/Indicator Light Code | Definition |
|---|---|
| P0500/21, 23 | Vehicle Speed Sensor Circuit |
| P1520/52 | Stoplight Switch Circuit |
| P1566/54 | Input Signal Circuit |