DTC 32

Code 32 Chart:

Chart C-7 Wiring Diagram:

CIRCUIT DESCRIPTION:
Code 32 represents an EGR flow test failure. The ECM, on close throttle coast down, will cycle the solenoids "ON" and "OFF" individually and look for a resulting change in engine rpm and oxygen activity.

TEST DESCRIPTION: Numbers below refer to circled numbers on the diagnostic chart.

1. This test determines if there is power to the EGR valve.

2. This test will determine if there is an open circuit in the EGR wiring or if the EGR valve is at fault.

3. This test will determine if there is a short to ground in any circuit going to the EGR valve or if the ECM is at fault.

DIAGNOSTIC AIDS:

^ An intermittent may be caused by a poor connection, rubbed through wire insulation, or a wire broken inside the insulation.