DTC 69

Diagnostic Trouble Code (DTC) 69:

A/C Circuit:

CIRCUIT DESCRIPTION
When the Powertrain Control Module (PCM) detects that Air Conditioning (A/C) has been requested, the PCM 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 PCM.

An open or short to ground at any point in CKT 59 will cause Diagnostic Trouble Code (DTC) 69 to set.

DTC 69 WILL SET WHEN
The PCM has commanded A/C "ON" and no voltage is detected on the A/C status line for more than 26 seconds.

ACTION TAKEN (PCM DEFAULT)
DTC 69 will be stored in the PCM memory but will not turn "ON" the Malfunction Indicator Lamp (MIL), A/C operation will be disabled.

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

1. A problem that may prevent the compressor from engaging may or may not cause DTC 69 to set.

2. For detailed underhood electrical center relay cavity identification, refer to Diagrams/Electrical.

3. Tech 1 scanner will enable clutch circuit for 5 seconds.

4. If the A/C clutch operates properly and the Tech 1 scanner shows A/C clutch status "OFF," then an open exists between the PCM and the splice to the compressor.

DIAGNOSTIC AIDS
Inspect the harness and all related connectors including the PCM connections. These may cause an intermittent. Check for damaged or pushed out terminals.