Test Description
WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 3: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
- 4: This step determines if the engine control module (ECM) has set any DTCs related to the HVAC system.
Diagnostic System Check - HVAC Systems - Manual
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you review the HVAC Preliminary Checks in Heating, Ventilation, and Air Conditioning? | Go to Step 2 | Go to HVAC Preliminary Checks in Heating, Ventilation and Air Conditioning |
| 2 | Install a scan tool. Does the scan tool power up? |
Go to Step 3 | Go to Scan Tool Does Not Power Up in Data Link Communications |
| 3 |
|
Go to Step 4 | Go to Scan Tool Does Not Communicate with Component in Data Link Communications |
| 4 | Select the display DTCs function on the scan tool for the ECM. Does the scan tool display DTC P0532, P0533, or P0645? |
Go to Diagnostic Trouble Code (DTC) List | Go to Step 5 |
| 5 | Does the scan tool display any other DTCs? | Go to Diagnostic Trouble Code (DTC) List in Engine Controls - 1.6L (L91) |
Go to Symptoms - HVAC Systems - Manual |