Power Windows: Diagnosis Mazda MPV I

SYSTEM TESTING

SYMPTOM DIRECTORY

Note. "Main switch/passenger's" refers to passenger's window switch on main switch.

SYMPTOM NO. 1

1. Turn ignition on. Check 30-amp power window fuse in fuse block, near left kick panel. If fuse is blown, replace fuse (repair wiring if necessary). If fuse is okay, check voltage at Black/Red wire terminal of main switch connector.
2. If battery voltage is not present, repair Black/Red wire between fuse and main switch. If battery voltage is present, check continuity between ground and Black wire terminal of main switch connector. If there is no continuity, repair Black wire. If there is continuity, replace main switch.

SYMPTOM NO. 2

1. Turn ignition on. At main switch connector, check voltage at Red wire terminal (driver's switch in UP position) and Green wire terminal (driver's switch in DOWN position). If battery voltage is not present at both terminals, replace main switch. If battery voltage is present at both terminals, go to next step.
2. At driver's window motor connector, check voltage at Red wire terminal (driver's switch in UP position) and Green wire terminal (driver's switch in DOWN position). If battery voltage is not present at both terminals, repair wiring between main switch and window motor. If battery voltage is present at both terminals, replace window motor.

SYMPTOM NO. 3

1. Turn ignition on. At main switch connector, check voltage at Red/Black wire terminal (main switch/passenger's in UP position) and Green/Black wire terminal (main switch/passenger's in DOWN position). If battery voltage is not present at both terminals, replace main switch. If battery voltage is present at both terminals, go to next step.
2. At sub-switch connector, check voltage at Red/Black wire terminal (main switch/passenger's in UP position) and Green/Black wire terminal (main switch/passenger's in DOWN position). If battery voltage is not present at both terminals, repair wiring between main switch and sub-switch. If battery voltage is present at both terminals, go to next step.
3. At sub-switch connector, check voltage at Red wire terminal (main switch/passenger's in UP position) and Green wire terminal (main switch/passenger's in DOWN position). If battery voltage is not present at both terminals, replace sub-switch. If battery voltage is present at both terminals, go to next step.
4. At passenger's window motor connector, check voltage at Red wire terminal (main switch/passenger's in UP position) and Green wire terminal (main switch/passenger's in DOWN position). If battery voltage is not present at both terminals, repair wiring between sub-switch and window motor. If battery voltage is present at both terminals, replace window motor.

SYMPTOM NO. 4

1. Turn ignition on. Turn power cut (window lock-out) switch to ON position. Check voltage at Black/Blue wire terminal of main switch connector. If battery voltage is not present, replace main switch.
2. If battery voltage is present, check voltage at Black/Blue wire terminal of sub-switch connector. If battery voltage is not present, repair Black/Blue wire between main switch and sub-switch. If battery voltage is present, replace sub-switch.

SYMPTOM NO. 5

Replace main switch.

MAIN SWITCH TEST

Check continuity across specified terminals of main switch connector with switch button held in specified position. See appropriate MAIN SWITCH CONTINUITY TEST table. (Scheme 1) Replace main switch if continuity is not as specified.

MAIN SWITCH CONTINUITY TEST

Scheme 1

POWER CUT SWITCH TEST

Check continuity across specified terminals of main switch connector with power cut switch button held in specified position. See POWER CUT SWITCH CONTINUITY TEST table. (Scheme 1) Replace main switch if continuity is not as specified.

POWER CUT SWITCH CONTINUITY TEST

SUB-SWITCH TEST

Check continuity across specified terminals of sub-switch connector with switch button held in specified position. See SUB-SWITCH CONTINUITY TEST table. (Scheme 2) Replace sub-switch if continuity is not as specified.

SUB-SWITCH CONTINUITY TEST

Scheme 2

WINDOW MOTOR TEST

Disconnect window motor connector. Apply battery voltage and ground across window motor connector terminals. Reverse polarity to move window in opposite direction. Replace window motor if it does not operate.