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P0562-BATTERY VOLTAGE LOW (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - SCHE- For a complete wiring diagram Refer to Section 8W Theory of Operation The Transmission Control Module (TCM) monitors ignition voltage. The DTC will set if the monitored battery voltage • When Monitored: • Set Condition: Possible Causes ENGINE CHARGING SYSTEM DTCS LOW BATTERY VOLTAGE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT HIGH RESISTANCE (Z904) GROUND CIRCUIT HIGH RESISTANCE (F946) TRANSMISSION RELAY OUTPUT CIRCUIT HIGH RESISTANCE TRANSMISSION RELAY TRANSMISSION CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Diagnostic Test 1. CHECK FOR ENGINE CHARGING SYSTEM DTCS With the scan tool, read Engine DTCs. Are there any Engine Charging System DTCs present? Yes >> Refer to the 9 - ENGINE ELECTRICAL DIAGNOSTICS and perform the appropriate symptom. No >> Go To 2 2. CHECK SYSTEM VOLTAGE Start the engine. With the scan tool, under transmission, check system voltage. Is the transmission system voltage above 9.0 volts? Yes >> Go To 4 No >> Go To 2 21 - 462 AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS WK |