DTC 69

DTC 69 Chart A/C Clutch Circuit:

A/C Clutch System Wiring Diagram:

Circuit Description:

When the ECM detects that A/C has been requested, the ECM will activate the A/C clutch relay. When the relay has been activated, voltage should be present at both the A/C compressor clutch and the A/C clutch status line terminal of the ECM.

If the ECM activates the A/C clutch relay but does not detect voltage present at the A/C status terminal for more than 20 seconds, a DTC 69 will set.

An open or short to ground at any point in CKT 59 or CKT 603 will cause DTC 69 to set.

A DTC 69 fault will be stored in the ECM memory but will not turn "ON" the Malfunction Indicator Lamp (MIL) "Service Engine Soon."

Test Description: Number(s) below refer to circled number(s) on the diagnostic chart.

1. DTC 69 will set if:

^ ECM has commanded A/C "ON."

^ No voltage detected on A/C status line after 20 seconds.

2. If the A/C compressor clutch operates properly and the scanner shows A/C status "OFF," then an open exists between the ECM and the splice to the compressor.