Power Window Master Switch Input Test
NOTE:
Before testing, troubleshoot the multiplex integrated control unit 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), and remove the power window master switch (see REAR POWER WINDOW SWITCH TEST/REPLACEMENT ).
- Disconnect the 37P connector (A) from the power window master switch (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 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 9 PNK Ignition switch ON (II), 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. 36 (10 A) fuse in the under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
- Faulty under-dash fuse/relay box
10 LT GRN Ignition switch ON (II), 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. 36 (10 A) fuse in the under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
- Faulty under-dash fuse/relay box
11 GRN Ignition switch ON (II), power mirror switch in RIGHT mirror position Measure the voltage to ground: There should be battery voltage when the power mirror switch UP or LEFT is pressed. - Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
- Faulty power mirror switch
- An open or high resistance in the wire
- Faulty under-dash fuse/relay box
1(1) ORN Ignition switch ON (II), connect terminals No. 14 and No. 1 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 (G401) or an open in the ground wire
- An open or high resistance in the wire
26 LT BLU Ignition switch ON (II), connect terminals No. 14 and No. 26 with a jumper wire Check the power mirror switch lights operation: The power mirror switch lights should come on. - Faulty LED
- Faulty power mirror switch
- Poor ground (G401) or an open in the ground wire
- An open or high resistance in the wire
(1) With mirror defogger
NOTE: When testing for defogger function, holding a cup of hot water near the mirror glass will form steam that can assist in diagnosing a broken or under-performing defogger. - Reconnect the connector to the power window master switch, turn the ignition switch to ON (II), 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, the door multiplex control unit is faulty; replace the power window master switch (see POWER WINDOW MASTER SWITCH REPLACEMENT ).
NOTE: After replacing the power window master switch, reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT ).Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 32 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. - Poor ground(G401)
- An open or high resistance in the ground wire
37 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V. - Poor ground(G401)
- An open or high resistance in the ground wire
14 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. - Blown No. 36 (10 A) fuse in the under-dash fuse/relay box
- An open or high resistance in the wire
- Faulty under-dash fuse/relay box