Possible Causes
| Possible Causes |
|---|
| EXCESSIVE RESISTANCE IN THE (K21) IAT SIGNAL CIRCUIT |
| (K21) IAT SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K21) IAT SIGNAL CIRCUIT SHORTED TO GROUND |
| (K21) IAT SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT |
| EXCESSIVE RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT |
| INTAKE AIR TEMPERATURE (IAT) SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .