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B1436-VOICE RECOGNITION/PHONE SWITCH INPUT CIRCUIT LOW (CONTINUED) For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes INSIDE REARVIEW MIRROR (X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORT TO (X835) SENSOR GROUND (X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORT TO GROUND HANDS FREE MODULE Diagnostic Test 1. Check for active DTC With the scan tool, read the active DTC’s. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per With the scan tool, read the active DTC’s. Does the scan tool display this DTC as active? Yes >> Go To 2 No >> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con- nectors. Look for broken, bent, pushed out, or corroded terminals. 2. Check the voltage of the (X730) Voice Recognition/Phone Switch Signal Turn the ignition off. Disconnect the Inside Rearview Mirror C2 harness connector. Turn the ignition on. With the scan tool, monitor the VR Phone Switch voltage. Is the voltage above 4.7 volts? Yes >> Replace the Inside Rearview Mirror in accordance with the service information. Perform BODY VERIFICATION TEST – VER 1. No >> Go To 3 HB NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS 8T - 23 |