Power Mirror Control Unit Input Test/Replacement
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
)
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION )
- Disconnect the 24P connector (A) from the power mirror control unit (B)
- Inspect the connector and socket terminals to be sure they are all making good contact
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system
- If the terminals look OK, go to step 5
- Reconnect the connector to the power mirror control unit, and do these input tests at the following connector
- If any test indicates a problem, find and correct the cause, then recheck the system
- If all the input tests prove OK, go to step 6
TEST CONDITION INPUT CHARTCavity Wire Test condition Test Desired result Possible cause if desired result is not obtained 22 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2V - Poor ground (G401) an open in the ground wire
- An open or high resistance in the wire
11 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage - Blown No 12 (7.5 A) fuse in the driver's under-dash fuse/relay box
- An open or high resistance in the wire
24 WHT Under all conditions Measure the voltage to ground: There should be battery voltage - Blown No 15 (10 A) fuse in the under-hood fuse/relay box
- An open or high resistance in the wire
1
2PNK
BLUIgnition switch ON (II), or power mode ON, and mirror select switch in LEFT, then mirror down switch pressed Measure the voltage to ground: There should be battery voltage - Blown No 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
8
9LT BLU
GRYIgnition switch ON (II), or power mode ON, and mirror select switch in RIGHT, then mirror down switch pressed Measure the voltage to ground: There should be battery voltage - Blown No 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
10 ORN Ignition switch ON (II), or power mode ON, and mirror select switch in LEFT or RIGHT, then mirror up switch pressed Measure the voltage to ground: There should be battery voltage - Blown No 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
7 LT BLU Move left or right mirrors Measure the voltage to ground: There should be about 5 V - Faulty mirror position sensor
- A short to ground in the wire
4
6YEL
GRNSwing the left mirror from full left to full right Measure the voltage between terminals No 4 and No 6: There should be about 0.5 V to 4.5V (about 2.5V) - Faulty left mirror position sensor
- An open in the wire
- A short to ground in the wire
5
6PUR
GRNMove the left mirror from full up to full down Measure the voltage between terminals No 5 and No 6: There should be about 0.5 V to 4.5V (about 2.5 V) - Faulty left mirror position sensor
- An open in the wire
- A short to ground in the wire
20
6BLU
GRNSwing the right mirror from full left to full right Measure the voltage between terminals No 20 and No 6: There should be about 0.5 V to 4.5V (about 2.5 V) - Faulty right mirror position sensor
- An open or high resistance in the wire
- A short to ground in the wire
19
6ORN
GRNMove the right mirror from full up to full down Measure the voltage between terminals No 19 and No 6: There should be about 0.5 V to 4.5V (about 2.5 V) - Faulty right mirror position sensor
- An open or high resistance in the wire
- A short to ground in the wire
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then disconnect the connectors from the power mirror control unit, and do these input tests at the following connectors
- If any test indicates a problem, find and correct the cause, then recheck the system
- If all the input tests prove OK, the control unit must be faulty, replace it
TEST CONDITION INPUT CHARTCavity Wire Test condition Test Desired result Possible cause if desired result is not obtained 13 LT GRN Disconnect power seat control unit B (40P) connector Check for continuity between terminal No 13(LT GRN)and power seat control unit B (40P) connector terminal No 38 (PUR): There should be continuity An open or high resistance in the wire 14
15RED
BRNUnder all conditions Connect terminals No 14 and No 24, and terminals No 15 and No 22: The left mirror should move up - Faulty left mirror actuator
- An open or high resistance in the wire
Connect terminals No 15 and No 24, and terminals No Hand No 22: The left mirror should move down 15
16GRN
PNKUnder all conditions Connect terminals No 15 and No 24, and terminals No 16 and No 22: The left mirror should swing left - Faulty left mirror actuator
- An open or high resistance in the wire
Connect terminals No 16 and No 24, and terminals No 15 and No 22: The left mirror should swing right 3
17BRN
WHTUnder all conditions Connect terminals No 3 and No 24, and terminals No 17 and No 22: The right mirror should move up - Faulty right mirror actuator
- An open or high resistance in the wire
Connect terminals No 17 and No 24, and terminals No 3 and No 22: The right mirror should move down 17
18WHT
PURUnder all conditions Connect terminals No 17 and No 24, and terminals No 18 and No 22: The right mirror should swing left - Faulty right mirror actuator
- An open or high resistance in the wire
Connect terminals No 18 and No 24, and terminals No 17 and No 22: The right mirror should swing right