DTC 68

Diagnostic Chart:

Wiring Diagram:

The line actuator is energized (low line pressure) when Circuit 1530 is grounded at PCM terminal J3F1. When the PCM opens the circuit the voltage is monitored to check for proper circuit conditions.

INFORMATION FLAG PARAMETERS

Info. Flag 68 is set when the PCM has detected the following condition after the line actuator circuit has been switched off electrically at the PCM twice per ignition cycle.

^ Voltage from the actuator to PCM terminal J3F1 (Circuit 1530) is less than 2 - 2.5 volts.



TEST DESCRIPTION

Numbered steps below refer to numbered steps on chart.


1. This step verifies problem is still present.


2. If fuse is OK, check for battery voltage on A/Trans relay side of fuse with engine running or with PCM in diagnostic mode.


3. This step checks for a ground in Circuit 1525. A ground in Circuit 1525 will cause the line actuator fuse to fail and set Info. Flag 68.

4. An open in Circuit 1525 will cause Info. Flag 68 to set. Check Circuit 1525 for opens.

5. This step indicates harness failure or actuator/connector plate failure.


6. This step will indicate an actuator or actuator/connector plate failure.

7. An open or a ground in Circuit 1530 will set Info. Flag 68. This step checks Circuit 1530 for opens or grounds.



DIAGNOSTIC AIDS

When attempting to diagnose an intermittent problem use the Scan tool* to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.

* Select MALF History from Scan tool TCM menu.


Check the tightness of the female terminal grip with a spare male terminal.

When the PCM detects a fault in the circuit (open, ground, short) the PCM will open the circuit internally to protect the circuit.