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BR -80 BRAKE SYSTEM TERMINAL & CONNECTOR INSPECTION E3D7980A 1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused 2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or 3. Has a problem been found? YES ▶ Repair as necessary and then go to "Verification Of Vehicle Repair" procedure. NO ▶ Go to "Power Circuit Inspection" procedure. POWER SUPPLY CIRCUIT INSPECTION E08856A2 1. Ignition "ON". 2. Measure voltage between terminal (1) of the wheel speed sensor harness connector and chassis ground. Specification : Approx. B+ V 1. Wheel speed sensor(+) <E02> 2 1 SCMBR6539L 3. Is the measured voltage within specifications? YES ▶ Go to "Signal Circuit Inspection" procedure. NO ▶ Check for open or short to GND in wheel speed sensor harness(FL) between terminal "1" of the wheel speed sensor(FL) harness connector and terminal of the HECU harness connector. Repair as necessary and then go to ▶ If OK, Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification Of Vehicle Repair" procedure. |