Computers and Control Systems: Diagnostic Trouble Code Tests and Associated Procedures
European and N. American Emissions
DTC P1702 (European)
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 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 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.
For further troubleshooting check this link:-----
http://tiny.cc/tstdk
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