EGR System

DTC Troubleshooting (cont'd)

11-455  

  1. Turn the ignition switch OFF.
  1. Turn the ignition switch ON (II).
  2. Measure voltage between the EGR valve 6P connector terminals No. 2 and No. 3.

EGR VALVE 6P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES

- Go to step 13.

NO

- Go to step 12.


  1. Measure voltage between ECM/PCM connector terminals A10 and A20.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there about 5 V?

YES

- Repair open in the wire between the EGR valve and the ECM/PCM (A10, A20).

NO

- Substitute a known-good ECM/PCM and recheck (see page 11-313). If symptom/indication goes away, replace the original ECM/PCM.


  1. Turn the ignition switch OFF.
  1. At the sensor side, measure resistance between the EGR valve 6P connector terminals No. 1 and No. 2.

EGR VALVE 6P CONNECTOR

Terminal side of male terminals

Is there continuity or resistance of 100 kohms or higher?

YES

- Replace the EGR valve.

NO

- Go to step 15.


  1. Measure resistance between the EGR valve 6P connector terminals No. 1 and No. 3.

EGR VALVE 6P CONNECTOR

Terminal side of male terminals

Is there 100 kohms or higher?

YES

- Replace the EGR valve.

NO

- Go to step 16.


  1. Reconnect the EGR valve connector.
  2. Turn the ignition switch ON (II).