| 1 |
Position sensor power supply circuit check
- Disconnect air intake control actuator connector with ignition switch turned OFF.
- Check for proper connection to air intake control actuator at "RED/WHT", "WHT/GRN" and "BLK/RED" wire terminals.
- If OK, measure voltage between "RED/WHT" wire terminal of air flow control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 4 - 6 V? |
Go to Step 6. |
Go to Step 2. |
| 2 |
Position sensor power supply circuit check
- Disconnect temperature control actuator connector with ignition switch turned OFF.
- Measure voltage between "RED/WHT" wire terminal of air intake control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 4 - 6 V? |
Temperature control actuator faulty. |
Go to Step 3. |
| 3 |
Position sensor power supply circuit check
- Disconnect air flow control actuator connector with ignition switch turned OFF.
- Measure voltage between "RED/WHT" wire terminal of air intake control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 4 - 6 V? |
Air flow control actuator faulty. |
Go to Step 4. |
| 4 |
Position sensor power supply circuit check
- Disconnect connector from HVAC control module with ignition switch turned OFF.
- Check for proper connection to HVAC control module connector at "G52-14", "G52-22" and "G52-13" terminals.
- If OK, measure resistance between "RED/WHT" wire terminal of air intake control actuator connector and "G52-14" terminal of HVAC control module connector.
Is resistance below 5 Ω? |
Go to Step 5. |
"RED/WHT" wire open or high resistance circuit. |
| 5 |
Position sensor power supply circuit check
- Measure resistance between "RED/WHT" wire terminal of air intake control actuator connector and vehicle body ground.
Is resistance infinity? |
Go to Step 6. |
"RED/WHT" wire shorted to ground circuit. |
| 6 |
Position sensor power supply circuit check
- Measure voltage between "RED/WHT" wire terminal of air flow control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 0 V? |
Go to Step 7. |
"RED/WHT" wire shorted to other circuit. |
| 7 |
Position sensor signal circuit check
- Connect HVAC control module connector with ignition switch turned OFF.
- Measure voltage between "WHT/GRN" wire terminal of air intake control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 4 - 6 V? |
Go to Step 11. |
Go to Step 8. |
| 8 |
Position sensor signal circuit check
- Disconnect connector from HVAC control module with ignition switch turned OFF.
- Measure resistance between "WHT/GRN" wire terminal of air intake control actuator connector and "G52-22" terminal of HVAC control module connector.
Is resistance below 5 Ω? |
Go to Step 9. |
"WHT/GRN" wire open or high resistance circuit. |
| 9 |
Position sensor signal circuit check
- Measure resistance between "WHT/GRN" wire terminal of air intake control actuator connector and vehicle body ground.
Is resistance infinity? |
Go to Step 10. |
"WHT/GRN" wire shorted to ground circuit. |
| 10 |
Position sensor signal circuit check
- Measure voltage between "WHT/GRN" wire terminal of air intake control actuator connector and vehicle body ground with ignition switch turned ON.
Is voltage 0 V? |
Go to Step 11. |
"WHT/GRN" wire shorted to other circuit. |
| 11 |
Position sensor ground circuit check
- Connect HVAC control module connector with ignition switch turned OFF.
- Measure resistance between "BLK/RED" wire terminal of air intake control actuator connector and vehicle body ground.
Is resistance below 5 Ω? |
Go to Step 12. |
Go to Step 13. |
| 12 |
Position sensor ground circuit check
- Measure resistance between "G52-13" terminal of HVAC control module connector and vehicle body ground.
Is resistance below 5 Ω? |
"BLK/RED" wire open or high resistance circuit. |
HVAC control module faulty. |
| 13 |
Air intake control actuator check
- Check air intake control actuator referring to AIR INTAKE CONTROL ACTUATOR INSPECTION .
Is it in good condition? |
HVAC control module faulty. |
Air intake control actuator faulty. |