P1761

DTC P1761

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.



DTC Descriptor
DTC P1761
- Up and Down Shift Switch Signal Circuit




Circuit/System Description

This is an internal fault detection of the transmission control module (TCM). This fault is handled inside the TCM and no external circuits are involved. The TCM is part of the control solenoid (w/body and TCM) valve assembly, and is not serviced separately.


Conditions for Running the DTC

* The engine is running.
* Ignition voltage is 8-18 volts.



Conditions for Setting the DTC

The control solenoid (w/body and TCM) valve assembly has detected a Driver Shift Control rolling count error for 8 seconds.


Action Taken When the DTC Sets

DTC P1761 is a Type B DTC.


Conditions for Clearing the DTC

DTC P1761 is a Type B DTC.


Diagnostic Aids

When attempting to set TCM internal DTCs, run the engine for at least 1 minute, and then shut the engine off for 30 seconds. Following this procedure will allow for a complete TCM shutdown. Program the TCM with the latest software version and retest the DTC to see if the DTC resets.


Reference Information
Schematic Reference

Automatic Transmission Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views
Electrical Information Reference

* Circuit Testing
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs
* High Voltage Disabling
* High Voltage Enabling

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference

* Scan Tool Output Controls (Scan Tool Output Controls)
* Scan Tool Data List (Scan Tool Data List)
* Scan Tool Data Definitions (Scan Tool Data Definitions)



Circuit/System Verification

1. Start the engine.
2. Let the engine run for 1 minute, then turn the key OFF for 30 seconds.
3. Retest for DTC P1761.



Circuit/System Testing

Program the TCM with the latest software version and retest for DTCs.

If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.



Component Testing

Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Control Solenoid Valve and TCM Assembly Solenoid Performance Test) .


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Control Module References - for control solenoid (w/body and TCM) valve assembly for replacement, setup, and programming.