Power Mirrors (Door Multiplex Control Unit) Input Test
  1. Disconnect the 37P connector (A) from the power window master switch (B).
  1. 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 .
  1. With the connector still disconnected, 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, replace the power window master switch.
    Cavity
    Wire
    Test condition
    Test: Desired result
    Possible cause if desired result is not obtained
    32
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G501)
    • An open in the wire
    37
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G502)
    • An open in the wire
    14
    LT GRN
    Ignition switch ON (II)
    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
    • An open in the wire
    5 *1
    BLU
    Ignition switch ON (II), retractable mirror 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 in the wire
    9
    WHT[PUR]
    Ignition switch ON (II), power mirror switch in RIGHT [LEFT] mirror position
    Measure the voltage to ground: There should be battery voltage when the power mirror switch LEFT or DOWN is pressed.
    • Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Faulty power mirror switch
    • An open in the wire
    10
    RED[YEL]
    Ignition switch ON (II), power mirror switch in RIGHT [LEFT] mirror position
    Measure the voltage to ground: There should be battery voltage when the power mirror switch RIGHT is pressed.
    • Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Faulty power mirror switch
    • An open in the wire
    11
    GRY[LT BLU]
    Ignition switch ON (II), power mirror switch in RIGHT [LEFT] mirror position
    Measure the voltage to ground: There should be battery voltage when the power mirror switch UP is pressed.
    • Blown No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Faulty power mirror switch
    • An open in the wire
    1 *2
    ORN
    Ignition switch ON (II), connect No. 14 and No. 1 terminals with a jumper wire
    Check the left [right] power mirror defogger operation: The left [right] power mirror defogger should work (the inside lower edge becomes warm).
    • Faulty left [right] power mirror defogger
    • Poor ground (G503)
    • An open in the wire
    7 *1
    LT BLU
    Ignition switch ON (II), connect No. 14 and No. 7 [or No. 8] terminals and No. 8 [or No. 7] and No. 32 terminals with jumper wires
    Check the retract actuator operation: The left [right] mirror should extend (or retract).
    NOTE: if the mirror stops moving, disconnect battery power immediately.
    • Faulty left [right] power mirror
    • An open in the wire
    8 *1
    LT GRN
    26
    PNK
    Ignition switch ON (II), connect No. 14 and No. 26 terminals with a jumper wire
    Check the power mirror switch light operation: The power mirror switch light should come on.
    • Faulty LED
    • Faulty power mirror switch
    • Poor ground (G501)
    • An open in the wire

    [ ]:
    RHD model

    *1:
    With retractable mirror
    *2:
    With mirror defogger