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BR -72 BRAKE SYSTEM GROUND CIRCUIT INSPECTION E03AF84C 1. Ignition "OFF". 2. Disconnect HECU connector. 3. Measure resistance between terminal "4" of the HECU harness connector and chassis ground. Specification : Approx. below 1 Ω Ω <C281> 4. Ground 1 5 6 8 9 10 11 12 13 14 15 16 18 20 21 26 27 28 29 30 31 32 33 35 37 38 2 3 4 * * * * * * * * * * * * * * * * * SCMBR6535L 4. Is the measured resistance within specifications? YES ▶ 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. NO ▶ Check for damaged harness and poor connection between terminal "4" of the HECU harness connector and chas- sis ground. Repair as necessary and then go to "Verification Of Vehicle Repair" procedure. VERIFICATION OF VEHICLE REPAIR E91923EB After a repair, it is essential to verify that the fault has been corrected. 1. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode 2. Using a scantool, Clear DTC. 3. Operate the vehicle within DTC Detecting Condition in General Information 4. Are any DTCs present? YES ▶ Go to the applicable troubleshooting procedure. NO ▶ System performing to specification at this time. |