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Home >> Mazda >> 2007 >> CX-7 Touring, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Symptom Troubleshooting [Power Window Systems (Auto-Open/Close Function)] >> No. 1 Door Glass Does Not Move Up And Down In Automatic Mode[Power Window Systems (Auto-Open/Close Function)] >> Diagnostic procedure
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Diagnostic procedure

POWER WINDOW SYSTEM DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT WHETHER POWER WINDOW SWITCH ENTERS FAIL-SAFE MODE OR NOT 
  • Did the door glass move up or down in automatic mode?
 Yes Reinspect malfunction symptoms.
No Go to the next step. (Power window switch may enter failsafe mode.)
2 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND FRONT POWER WINDOW MOTOR) OR ELSEWHERE 
  • Turn the ignition switch to the ON position.
  • Inspect the voltage at the following front power window switch terminals (sensor 1 signal):
    • Driver's side (at main switch): 2C
    • Passenger's side (at sub-switch): J
  • Does the voltage alternate between 0 V  and approx. 12 V  when the door glass is moving up and down?
 Yes Go to Step 7.
No Go to the next step.
3 VERIFY SENSOR 1 OUTPUT SIGNAL 
  • Turn the ignition switch to the ON position.
  • Inspect the voltage at the following front power window motor terminals (sensor 1 signal):
    • Driver's side: A
    • Passenger's side: A
  • Is the voltage alternate between 0 V  and approx. 12 V  when the door glass is moving up and down in manual mode?
 Yes Go to the next step.
No Replace the power window motor, then go to Step 12.
4 INSPECT WIRING HARNESS BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR FOR CONTINUITY 
  • Turn the ignition switch to the LOCK position.
  • Disconnect the power window switch connector.
  • Is there continuity between the following front power window switch terminals and front power window motor terminals?
    • Driver's side (at main switch-power window motor):
      • 2C-A (sensor 1 signal)
      • 2B-D (sensor power supply)
      • 2A-C (ground signal)
    • Except driver's side (at sub-switch-power window motor):
      • J-A (sensor 1 signal)
      • B-D (sensor power supply)
      • D-C (ground signal)
 Yes Go to the next step.
No Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
5 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR POWER WINDOW SWITCH 
  • Turn the ignition switch to the ON position.
  • Inspect the voltage at the following power window switch terminals:
    • Driver's side (at main switch)
      • 2C (sensor 1 signal)
      • 2A (ground signal)
    • Passenger's side (at sub-switch)
      • C (sensor 1 signal)
      • I (ground signal)
  • Is the voltage approx. 12 V  ?
 Yes Repair the wiring harness between the suspect power window switch and power window motor, then go to Step 12.
No Replace the suspect power window switch (open circuit or short to power supply in power window switch).
6 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE 
  • Is there continuity between the following power window switch terminals (wiring harness-side) and ground?
    • Driver's side (at main switch)
      • 2C (sensor 1 signal)
      • 2B (sensor power supply)
    • Passenger's side (at sub-switch)
      • J (sensor 1 signal)
      • B (sensor power supply)
 Yes Replace the wiring harness between the power window switch and power window motor, then go to Step 12.
No Go to the next step.
7 VERIFY WHETHER MALFUNCTION IS IN POWER WINDOW SWITCH OR ELSEWHERE 
  • Turn the ignition switch to the ON position.
  • Inspect the voltage at the following power window switch terminals (sensor 2 signal):
    • Driver's side (at main switch): 2D
    • Passenger's side (at sub-switch): H
  • Does the voltage alternate between 0 V  and approx. 12 V  when the door glass is moving up and down?
 Yes Replace the power window switch (malfunction in power window switch automatic mode control), then go to Step 11.
No Go to the next step.
8 VERIFY SENSOR 2 OUTPUT SIGNAL 
  • Turn the ignition switch to the ON position.
  • Inspect the voltage at power window motor terminal B (sensor 2 signal).
  • Does the voltage alternate between 0 V  and approx. 12 V  when door glass is moving up and down?
 Yes Go to the next step.
No Replace the power window motor, then go to Step 12.
9 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE 
  • Turn the ignition switch to the LOCK position.
  • Disconnect the power window switch connector and power window motor connector.
  • Is there continuity between the following power window switch terminals and power window motor terminals?
    • Driver's side (at main switch-power window motor): 2D and B
    • Passenger's side (at sub-switch-power window motor): H and B
 Yes Go to the next step.
No Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
10 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR ELSEWHERE 
  • Is there continuity between the following power window switch terminals (sensor 2 signal) and ground?
    • Driver's side (at main switch): 2D
    • Except driver's side (at sub-switch): H
 Yes Repair the wiring harness between the power window switch and power window motor, then go to Step 12.
No Go to the next step.
11 VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW SWITCH AND POWER WINDOW MOTOR) OR POWER WINDOW SWITCH 
  • Turn the ignition switch to the ON position.
  • Measure the voltage at the following power window switch terminals (sensor 2 signal):
    • Driver's side (at main switch): 2D
    • Except driver's side at (at sub-switch): H
  • Is the voltage approx. 12 V  ?
 Yes Repair the wiring harness between the power window switch and front driver-side power window motor, then go to the next step.
No Replace the power window switch (open circuit or short to power supply/ground in power window switch), then go to the next step.
12 REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR 
  • Is malfunction no longer present?
 Yes
  • Troubleshooting completed.
  • Explain repairs to the customer.
No Reinspect malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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