07–09 Acura MDX Power Mirror Works Erratically? Replace Just the Actuator.pdf

07–09 Acura MDX Power Mirror Works Erratically? Replace Just the Actuator

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Currently Applies To: ’07–09 MDX, ’07–09 RDX, and ’04–08 TL Thinking about replacing a power mirror for any of these reasons? MDX and TL only • The DPMS won’t recall one or both of the power mirror memory positions. • The DPMS moves the driver’s seat back 1 inch and then stops. • Any of these B-CAN DTCs are set: MDX • DTC B2182 (left power mirror horizontal sensor signal error) • DTC B2183 (left power mirror vertical sensor signal error) • DTC B2184 (right power mirror horizontal sensor signal error) • DTC B2185 (right power mirror vertical sensor signal error) TL • DTC B1830 (right mirror horizontal sensor malfunction) • DTC B1831 (right mirror vertical sensor malfunction) • DTC B1832 (left mirror horizontal sensor malfunction)

• DTC B1833 (left mirror vertical sensor malfunction) All • The power mirror won’t automatically return from its tilt down mode when shifting from Reverse. • The power mirror chatters or flickers when you shift into Reverse or while moving it with the adjusting switch. Warranty Parts Inspection (WPI) has found that in a number of returned power mirrors, the actuator inside was the real culprit—not the entire power mirror. So before you go off and order a new power mirror, try doing this procedure first—a new actuator may be all you really need: 1. Hook up the HDS, and check for DTCs. • If you see any of the B-CAN DTCs we’ve listed here, go to step 2. • If you don’t see any DTCs, continue with normal troubleshooting.

2. From the SYSTEM SELECT menu, select BODY ELECTRICAL, then POWER SEAT/POWER MIRROR. 3. Enter the DATA LIST, and scroll down to the applicable power mirror sensor info. 4. Check the NORMAL/ABNORMAL info. • If you see ABNORMAL, go to step 5. • If you see NORMAL, continue with normal troubleshooting. 5. Swap the affected actuator with a known- good one, then clear the DTCs. 6. Use the adjusting switch to move the affected power mirror left, right, up, or down. Then recall the different mirror DPMS positions. 7. Recheck the affected power mirror sensor info in the DATA LIST. • If you now see NORMAL, replace the affected actuator. • If you still see ABNORMAL, continue with normal troubleshooting.