DTC Confirmation Test "A"
NOTE:
Perform the following DTC confirmation tests in order. Recheck for DTCs after each DTC confirmation test is performed. If DTC is set, see procedure for testing.
Malfunction is detected when EGR temperature sensor voltage is low when engine coolant temperature is low. Possible causes are:
- EGR temperature sensor circuit shorted.
- Defective EGR temperature sensor.
- EGR system not functioning properly.
- Defective EGR Control Backpressure Transducer (EGRC-BPT).
- Defective EGR Control (EGRC) solenoid.
To set DTC, turn ignition on. Select DATA MONITOR with scan tool. Ensure engine coolant temperature is less than 104°F (40°C). Start engine and let it idle for at least 8 seconds.