TZ - Test

TZ: Vehicle Mode Signal

TZ: Introduction TZ - Introduction



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TZ1 KEY ON ENGINE OFF (KOEO) AND CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODE (DTC) P1A06: VERIFY THAT THE CONCERN IS PRESENT

Note: Clearing the transaxle control module (TCM) DTCs erases any TCM recorded freeze frame data. Make sure to record any TCM freeze frame information before proceeding any further. Refer to the scan tool instruction manual for freeze frame PID menu.

- Clear and retrieve TCM continuous DTCs.

Is DTC P1A06 present?

YES
GO to TZ2.

NO
Unable to duplicate or identify the concern at this time.

RETURN to Symptom Charts Symptom Related Diagnostic Procedures for further direction.


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TZ2 CHECK THE TCM VEHICLE MODE PID

- Key ON, engine OFF.
- Access the TCM and monitor the VEHMODE PID.
- Key ON, engine running.

Does the PID indicate that the VEHMODE changed when the key is cycled from ON to START?

YES
INSTALL a new transaxle assembly. REFER to Automatic Transaxle/Transmission.

NO
GO to TZ3.


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TZ3 CHECK FOR CORRECT PCM OPERATION

- Disconnect all the PCM connectors.
- Visually inspect for:

- pushed out pins
- corrosion
- Connect all the PCM connectors and make sure they seat correctly.
- Carry out the PCM self-test and verify the concern is still present.

Is the concern still present?

YES
INSTALL a new PCM.

REFER to Flash Electrically Erasable Programmable Read Only Memory (EEPROM) Flash Electrically Erasable Programmable Read Only Memory (EEPROM).

NO
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.