P1702

DTC P1702

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P1702 Malfunction of Engine Speed Signal

Conditions for Setting the DTC

* The transmission control module (TCM) detects that malfunction of engine speed signal for 2 seconds.
* No DTC U2105

Action Taken When the DTC Sets

* The TCM will request the illumination of the Hold/Malfunction Indicator Lamp (MIL) and store the DTC when the TCM detects a failure on the 1st ignition cycle.
* No engine torque reduction control
* No lock-up
* No engagement pressure control
* No 4th gear
* No self-learning control
* No timing solenoid control for N-D
* The TCM judges the engine revolution is 0 RPM.

Conditions for Clearing the DTC

* The TCM turns off the Hold/Malfunction Indicator Lamp (MIL) when no further failures are detected on the next ignition cycle.
* The scan tool can clear the DTC from the TCM history.
* The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.

Cause of Failure

* The wiring harness or the connector between the engine control module (ECM) and the TCM
* The ECM
* The TCM