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Home >> Acura >> 2007 >> RDX >> Repair and Diagnosis (Single Page) >> Body & Frame >> Mirrors >> Power Mirrors >> Power Mirror Control Unit Input Test

Power Mirror Control Unit Input Test

  1. Remove the driver's dashboard undercover (see DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION ).
  2. Disconnect the 24P connector (A) from the power mirror control unit (B).
    Fig 1: Disconnecting 24P Connector From Power Mirror Control Unit
    G05446522Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. 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 4.
  4. Reconnect the 24P connector to the control unit, and make these input tests at the 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 5.
    SYMPTOM CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    24 LT BLU Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 22 (7.5 A) fuse in the under-hood fuse/relay box(1)
    • Blown No. 23 (10 A) fuse in the under-hood fuse/relay box(2)
    • Faulty under-dash fuse/relay box
    • Faulty junction box(1)
    • An open in the wire
    11 LT GRN Ignition switch ON (II) Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 2 (IG) (50 A) fuse in the under-hood fuse/relay box
    • Blown No. 1 (7.5 A) fuse in the under-dash fuse/relay box
    • Faulty under-dash fuse/relay box
    • Faulty junction box
    • An open in the wire
    22 BLK Under all conditions Measure the voltage to ground:
    There should be less then 0.1 V.
    • Poor ground (G501)
    • An open in the wire
    (1) '07 model

    (2) '08-09 models
    SYMPTOM CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    1(2) BLU Ignition switch ON (II), the power mirror selector switch in the LEFT position, and the bottom edge of the mirror position switch pushed. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 36(10 A) fuse in the under-dash fuse/relay box
    • Faulty junction box
    • Faulty power mirror switch
    • An open in the wire
    2(2) YEL Ignition switch ON (II), the power mirror selector switch in the LEFT position, and the left edge of the mirror position switch pushed. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
    • Faulty junction box
    • Faulty power mirror switch
    • An open in the wire
    8 PNK Ignition switch ON (II), the power mirror selector switch in the RIGHT position, and the right edge of the mirror position switch pushed. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
    • Faulty junction box
    • Faulty power mirror switch
    • An open in the wire
    9 LT GRN Ignition switch ON (II), the power mirror selector switch in the RIGHT position, and the bottom edge of the mirror position switch pushed. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
    • Faulty junction box
    • Faulty power mirror switch
    • An open in the wire
    10 WHT Ignition switch ON (II), the power mirror selector switch in the RIGHT position, and the top edge of the mirror position switch pushed. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
    • Faulty junction box
    • Faulty power mirror switch
    • An open in the wire
    23(1) PUR Ignition switch ON (II) and the transmission range switch in R position. Measure the voltage to ground:
    There should be less then 0.1 V.
    • Faulty transmission range switch
    • An open in the wire
    Ignition switch ON (II) and the transmission range switch in any position except R. Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 10 (7.5 A) fuse in the under-dash fuse/relay box
    • Faulty under-dash fuse/relay box
    • Faulty transmission range switch
    (1) '07 model

    (2) '08 -09 models
  5. Check the PCM DTCs. If there is no DTC, jump the SCS line with the HDS, then disconnect PCM connector A (44P) ('07 model), the power seat control unit 40P connector ('08 model), and the power mirror control unit 24P connector.
  6. Make these input tests at the connector.
    • 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 the power mirror control unit.
SYMPTOM CHART

Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
3
 
17
 
18		 PNK
 
PUR
 
GRN		 Under all conditions Connect the No. 24 and No. 3 terminals, and No. 17 and No. 22 terminals:
The right power mirror moves UP.
  • Faulty right power mirror actuator
  • An open in the wire
Connect the No. 24 and No. 18 terminals, and No. 17 and No. 22 terminals: The right power mirror moves RIGHT.
  • Faulty right power mirror actuator
  • An open in the wire
14(1)
 
15(1)
 
16(1)		 RED
 
LT BLU
 
BLU		 Under all conditions Connect the No. 24 and No. 14 terminals, and No. 15 and No. 22 terminals:
The left power mirror moves UP.
  • Faulty left power mirror actuator
  • An open in the wire
Connect the No. 24 and No. 16 terminals, and No. 15 and No. 22 terminals:
The left power mirror moves RIGHT.
  • Faulty left power mirror actuator
  • An open in the wire
(1) '08-09 models
SYMPTOM CHART

Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
21(1) BLU Under all conditions Check for continuity between the No. 21 terminal and PCM connector A (44P) No. 29 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 21 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
13(2) WHT Disconnect the power seat control unit connector 40P Check for continuity between the No. 13 terminal and power seat control unit connector A (40P) No. 39 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 13 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
6 LT GRN Disconnect the right power mirror connector 14P Check for continuity between the No. 6 terminal and power mirror connectors 14P No. 4 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 6 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
7 WHT Disconnect the right power mirror connector 14P Check for continuity between the No. 7 terminal and power mirror connectors 14P No. 5 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 7 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
(1) '07 model

(2) '08-09 models
SYMPTOM CHART

Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
19 YEL Disconnect the right power mirror connector 14P Check for continuity between the No. 19 terminal and right power mirror connector 14P No. 2 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 19 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
20 BRN Disconnect the right power mirror connector 14P Check for continuity between the No. 20 terminal and right power mirror connector 14P No. 3 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 19 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
5(1) GRN Disconnect the left power mirror connector 14P Check for continuity between the No. 5 terminal and left power mirror connector 14P No. 2 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 5 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
4(1) ORN Disconnect the left power mirror connector 14P Check for continuity between the No. 4 terminal and left power mirror connector 14P No. 3 terminal:
There should be continuity.		 An open in the wire
Check for continuity between the No. 4 terminal and body ground:
There should be no continuity.		 A short to ground in the wire
(1) '08-09 models
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