Possible Causes
- GOOD TRIP EQUAL TO ZERO
- (K21) IAT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
- IAT SENSOR VOLTAGE BELOW 1.0 VOLTS
- (K21) IAT SIGNAL CIRCUIT OPEN
- (K4) SENSOR GROUND CIRCUIT OPEN
- (K21) IAT SIGNAL SHORTED TO GROUND
- (K21) IAT SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND
- PCM HIGH
- PCM LOW