Diagnostic Trouble Code (DTC) Information ECM-P085086

Condition

Engine control module (ECM) uses signals from Transmission control module (TCM) to decide which position the gear selector is in.

This is done so that Engine control module (ECM) can decide if engine start is permitted or not.

The diagnostic trouble code (DTC) is stored if the control module detects that:

The quality of the signal coming via CAN is too low.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

Ignition switch position II.

NOTE:

The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

HINT: If Engine control module (ECM) has been recharged or if the battery voltage has been interrupted, the brake pedal must be pressed down twice for approx. two seconds to activate the cruise control function.

Substitute Value

None.

Possible Source

Trace the cause of the fault in the Transmission Control Module (TCM).

Fault symptom[s]

Starting/Engine does not start/Engine does not turn/No clicking sound at start attempt
Starting/Engine does not start/Engine does not turn/Unsure when/at all times
Starting/Engine does not start/Engine does not turn/Clicking sound at start attempt
Starting/Engine does not start/Unsure when/at all times