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Rear View Mirrors - Rear View Mirrors Diagnosis and Testing Principles of Operation For a detailed description of the rear view mirror systems, refer to the relevant Description and Operation section in the Rear View Mirrors (501-09 Rear View Mirrors, Description and Operation). Inspection and Verification CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor 1. Verify the customer concern. 1. 2. Visually inspect for obvious signs of mechanical or electrical damage. 2. Visual Inspection Mechanical Electrical Condition, correct installation and security of rear view mirrors Fuses/relays (refer to electrical guide) 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. 3. 4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index. 4. DTC Index • NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the • NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the • NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal • NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests. • NOTE: If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may DTC Description Possible Causes Action B116311 Left Mirror Heater Output short to ground Short to ground Refer to the electrical circuit diagrams and test left mirror heater output circuit for short to ground B116315 Left Mirror Heater Output short to power Short to power Refer to the electrical circuit diagrams and test left mirror B116411 Right Mirror Heater Output short to ground Short to ground Refer to the electrical circuit diagrams and test right mirror heater output circuit for short to ground B116415 Right Mirror Heater Output short to power Short to power Refer to the electrical circuit diagrams and test right mirror B1A9411 Driver Mirror Short to ground Refer to the electrical circuit diagrams and test driver mirror fold motor circuit for short to ground B1A9415 Driver Mirror Short to power Refer to the electrical circuit diagrams and test driver mirror B1A9511 Passenger Mirror Short to ground Refer to the electrical circuit diagrams and test passenger mirror fold motor circuit for short to ground B1A9515 Passenger Mirror Short to power Refer to the electrical circuit diagrams and test passenger B1C0911 Driver Left/Right Mirror Motor Circuit Short to ground Refer to the electrical circuit diagrams and test driver left/right mirror motor circuit for short to ground B1C0915 Driver Left/Right Mirror Motor Circuit Short to power Refer to the electrical circuit diagrams and test driver B1C1011 Driver Up/Down Mirror Motor Circuit Short to ground Refer to the electrical circuit diagrams and test driver up/down mirror motor circuit for short to ground |