Test S: Red Brake Warning Indicator Inoperative
- Turn ignition switch to RUN position. Apply parking brake. If Red brake warning indicator is not illuminated, go to step 5 . If Red brake warning indicator is illuminated, release parking brake and go to next step.
- Turn ignition switch to LOCK position. Disconnect brake fluid level switch Gray 3-pin harness connector C143. Turn ignition switch to RUN position. Connect a fused (7.5-amp) jumper wire between ground and brake fluid level switch harness connector Violet/White wire terminal. If Red brake warning indicator does not illuminate, go to next step. If Red brake warning indicator illuminates, repair or replace brake fluid level switch. Recheck system operation.
- Turn ignition switch to LOCK position. Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Measure resistance of Violet/White wire between instrument cluster White 10-pin harness connector C288 terminal No. 5 and brake fluid level switch harness connector C143. See Figure . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Violet/White wire between instrument cluster and brake fluid level switch. Recheck system operation.
- Remove Red brake warning indicator bulb and check for continuity between bulb terminals. If continuity exists, replace instrument cluster printed circuit. See PRINTED CIRCUIT under REMOVAL & INSTALLATION. Recheck system operation. If continuity does not exist, replace bulb. Recheck system operation.
- Turn ignition switch to LOCK position. Disconnect parking brake switch harness connector C211. Turn ignition switch to RUN position. Connect a fused jumper wire between ground and parking brake switch harness connector Light Green/Red wire terminal. If Red brake warning indicator does not illuminate, go to next step. If Red brake warning indicator illuminates, replace parking brake switch. Recheck system operation.
- Turn ignition switch to LOCK position. Remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Remove Red brake warning indicator bulb and check for continuity between bulb terminals. If continuity exists, go to next step. If continuity does not exist, replace bulb. Recheck system operation.
- Measure resistance between instrument cluster White 10-pin harness connector C288 terminal No. 5 (Violet/White wire) and parking brake switch harness connector Light Green/Red wire terminal. See Figure . If resistance is less than 5 ohms, replace instrument cluster printed circuit. See PRINTED CIRCUIT under REMOVAL & INSTALLATION. Recheck system operation. If resistance is 5 ohms or more, repair open in Violet/White and/or Light Green/Red wire. Recheck system operation.