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DC/DC CONVERTER <VEHICLES WITH AUTO STOP & GO (AS&G) SYSTEM> CHASSIS ELECTRICAL 54A-502 STEP 7. Check the wiring harness between C-65 • Check the power supply line for open circuit and short circuit. Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00, How to NO : Repair the wiring harness. STEP 8. Resistance measurement at C-65 DC/DC wiring harness side. (2) Check the continuity between terminal No.10 and earth. OK: Continuity exists (2 Ω or less) Q: Is the check result normal? YES : No action is necessary and testing is complete. NO : Go to Step 9. STEP 9. Check the wiring harness between C-65 • Check the body earth wires for open circuit. Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service − How to Cope with Intermittent Malfunction ). NO : Repair the wiring harness. Inspection Procedure 2: Audio equipment is reset or sound jump occurs at auto start. CAUTION Even when the diagnosis code No. B1301 or B1302 is set in the AS&G-ECU, do not conclude as a DC/ COMMENTS ON TROUBLE SYMPTOM • Diagnosis code No. B1301 or B1302 is stored in AS&G-ECU, and voltage is not boosted by DC/ • DC/DC converter internal malfunction • Battery voltage drop • Communication error with AS&G-ECU and DC/ DC converter • AS&G-ECU malfunction NOTE: If a reset or sound jump occurs with AUDIO PROBABLE CAUSES • The DC/DC converter may be defective. • The AS&G-ECU may be defective. • The battery may be defective. • Damaged harness wires and connectors DIAGNOSIS PROCEDURE STEP 1. Check the power supply system circuit Q: Is the check result normal? ACA00895AQ Connector: C-64, C-65 <RHD> C-65 (GR) C-64 ACA00892 Connectors: C-64, C-65 <LHD> AQ C-64 C-65 (GR) |