Test Ah: Brake Fluid Level Display Not Operating Properly
- Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition switch to RUN position. Using NGS tester, select instrument cluster active command WARNING LAMPS AND CHIMES. Trigger ALL LAMPS ON, then OFF. BRAKE warning indicator should illuminate when triggered ON and should not illuminate when triggered OFF. If BRAKE warning indicator operates as specified, go to next step. If BRAKE warning indicator does not operate as specified, replace instrument cluster.
- Turn ignition switch to LOCK position. Disconnect brake fluid level switch harness connector C124. Turn ignition switch to RUN position. If BRAKE warning indicator is on, go to next step. If BRAKE warning indicator is not on, replace brake fluid level switch.
- Turn ignition switch to LOCK position. Using NGS tester, monitor Front Electronic Module (FEM) PID FLUID_1. Turn ignition switch to RUN position. Using a fused jumper wire, connect terminals No. 1 (White/Red wire) and No. 2 (Black/Blue wire) at brake fluid level switch harness connector. With jumper wire connected, PID should display ON. Without jumper wire connected, PID should display OFF. If PID displays as specified, replace FEM. If PID does not display as specified, go to next step.
- Turn ignition switch to LOCK position. Disconnect FEM harness connector C201c. Measure between ground and terminal No. 11 (White/Red wire) at FEM harness connector C201c. See Figure . If resistance is 10 k/ohms or less, repair short to ground in White/Red wire between brake fluid level switch and FEM. If resistance is greater than 10 k/ohms, replace FEM.