This is a data fault detection by the control solenoid (w/body and TCM) valve assembly. This fault is handled inside the control solenoid (w/body and TCM) valve assembly.

P1761

The TCM detects that the serial data for the Tap Up/Tap Down Switch signal circuit is corrupt 3 or more times in 10 seconds

P1762

The TCM detects that the serial data for the Trans Mode Switch signal circuit is corrupt 3 or more times in 10 seconds.

DTCs P1761 and P1762 are Type C DTCs.

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

Description and Operation

Electronic Component Description for control solenoid (w/body and TCM) valve assembly information.

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Start the engine. Let the engine run for at least 1 minute.
2. Ignition OFF for at least 30 seconds to allow for the complete shutdown of the TCM.
3. Ignition ON, verify that DTC P1762 is not set.

⇒	If DTC P1762 is set, reprogram the TCM. If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.

4. Observe the DTC information with a scan tool. DTC P1761 should not set.

⇒	If DTC P1761 resets, reprogram the body control module (BCM). If the DTC resets, replace the BCM.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.