Master Switch Input Test
NOTE:
The power window control unit is built into the power window master switch, and it only controls the driver's window operations.
- Remove the switch panel from the door panel (see DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect the 14P connector (B) from the master switch (A).
- 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.
- 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, go to step 5.INPUT TEST (CONNECTOR DISCONNECTED)
Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 10 BLK Under all conditions Check for continuity to ground:
There should be continuity.- Poor ground (G401)
- An open in the wire
14 12 YEL/GRN Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage.- Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
- An open in the wire
11 GRN/WHT Under all conditions Check for voltage to ground:
There should be battery voltage.- Blown No. 23 (20 A) fuse in the under-dash fuse/relay box
- An open in the wire
2 GRN/BLK Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage.- Blown No. 13 (40 A) fuse in the under-hood fuse/relay box
- Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
- Blown No. 22 (20 A) fuse in the under-dash fuse/relay box
- Faulty power window relay
- Faulty power window relay ground or wire
- An open in the wire
4 RED/BLK Connect the No. 7 and No. 11 terminals, and the No. 4 and No. 14 terminals. Check for driver's window motor operation:
It should run (the driver's window moves down).- Poor ground (G401)
- Faulty driver's window motor
- An open in the wire
7 RED/YEL 1 BLU/WHT Connect the No. 1 and No. 2 terminals, and the No. 3 and No. 10 terminals, and turn the ignition switch ON (II). Check for passenger's window motor operation:
It should run (the passenger's window moves down).- Poor ground (G401)
- Fault passenger's window motor
- Fault passenger's window switch
- An open in the wire
3 BLU/RED
- Reconnect the 14P connector to the switch, and perform 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, the control unit must be faulty; replace the power window master switch.INPUT TEST (CONNECTOR CONNECTED)
Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 5 RED/WHT Ignition switch ON (II) Check for voltage to ground:
There should be 5 V or more.- Faulty power window master switch
- Short to ground in the wire
6 LT GRN Under all conditions Check for voltage to ground:
There should be less than 1 V.An open in the wire 13 BLU Ignition switch ON (II), and the driver's window switch AUTO DOWN Check for voltage between the No. 13 and No. 6 terminals:
There should be 0 V - about 5 V-0 V - about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).- Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
- Blown No. 23 (20 A) fuse in the under-dash fuse/relay box
- Faulty power window relay
- Faulty power window master switch
- Short to ground in the wire
8 ORN Ignition switch ON (II), and the driver's window switch AUTO DOWN Check for voltage between the No. 8 and No. 6 terminals:
There should be 0 V - about 5 V - 0 V - about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).