Power Mirrors (Power Window Master Switch) Input Test
NOTE:
Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
Before testing, make sure the No. B9 (10 A) and No. B28 (20 A) fuses in the under-dash fuse/relay box are OK.

1.
Turn the vehicle to the OFF (LOCK) mode.

2.
Disconnect the power window master switch 37P connector.
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.
With the connector still disconnected, do the following input tests:
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.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
10
GRN
Vehicle ON mode, power mirror switch in RIGHT mirror position
Measure the voltage to ground:
There should be battery voltage when the power mirror switch LEFT or DOWN is pressed.
Blown No. B9 (10 A) fuse in the under-dash fuse/relay box
Faulty power mirror switch
An open or high resistance in the wire
11
GRY
Vehicle ON mode, power mirror switch in RIGHT mirror position
Measure the voltage to ground:
There should be battery voltage when the power mirror switch RIGHT or DOWN is pressed.
Blown No. B9 (10 A) fuse in the under-dash fuse/relay box
Faulty power mirror switch
An open or high resistance in the wire
12
WHT
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage when the power mirror switch UP or LEFT is pressed.
Blown No. B9 (10 A) fuse in the under-dash fuse/relay box
Faulty power mirror switch
An open or high resistance in the wire
15*1
PNK
Vehicle ON mode, connect terminals No. 18 and No. 15 with a jumper wire
Check the left power mirror defogger operation:
The left power mirror defogger should work (the inside lower edge becomes warm).
Faulty left power mirror defogger
Poor ground (G501) or an open in the ground wire
An open or high resistance in the wire
30
TAN
Vehicle ON mode, connect terminals No. 18 and No. 30 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) or an open in the ground wire
An open or high resistance in the wire
36
WHT
Disconnect these connectors:
Front passenger's power window switch 37P connector
Moonroof motor-control unit 14P connector*2
Check for continuity between terminal No. 36 and front passenger's power window switch 37P connector terminal No. 34:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity between terminal No. 36 and moonroof motor-control unit 14P connector terminal No. 12:
There should be continuity.
An open in the LIN(P/W) wire
Check for continuity to ground:
There should be no continuity.
A short to ground in the LIN(P/W) wire
*1: With mirror defogger
*2: With moonroof

5.
Reconnect the connector, and do the following input tests:
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.

NOTE: After replacing the power window master switch, do the resetting the power window control unit.

Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result
is not obtained
4
WHT
Under all conditions
Measure the voltage to ground:
There should be battery voltage.
Blown No. B28 (10 A) fuse in the under-dash fuse/relay box
An open or high resistance in the wire
18
BRN
Vehicle ON mode
Measure the voltage to ground:
There should be battery voltage.
Blown No. B9 (20 A) fuse in the under-dash fuse/relay box
An open or high resistance in the wire
3
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G502)
An open or high resistance in the ground wire
29
BLK
In all power modes
Measure the voltage to ground:
There should be less than 0.2 V.
Poor ground (G501)
An open or high resistance in the ground wire