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Power Windows: Diagnosis Mazda MX-5 NA

Windows 1 illustration ~425 words

SYSTEM TESTING

SymptomSymptom No.
Both Windows Inoperative1
Driver's Window Inoperative, Passenger's Window Okay2
Passenger's Window Inoperative, Driver's Window Okay3

SYMPTOM DIRECTORY

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/White wire terminal of main switch connector.
  2. If battery voltage is not present, repair Black/White 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 Green/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 Green/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 (passenger's switch in UP position) and Red/Green wire terminal (passenger'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 passenger's window motor connector, check voltage at Green/Red wire terminal (passenger's switch in UP position) and Green wire terminal (passenger'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.

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.

Switch PositionTerminals
Driver
UPA & C; B & D
Off (Neutral)B, C & D
DOWNA & D; B & C
Passenger
UPA & E; B & F
Off (Neutral)B, E & F
DOWNA & F; B & E

MAIN SWITCH CONTINUITY TEST

Scheme 1

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.

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.