Toyota Corolla Cross: AT Solenoids Operation Shutdown Circuit Stuck Off (P17029F)

DESCRIPTION

The TCM continuously monitors its CPU. If the output of the CPU deviates from the standard, the TCM will illuminate the MIL and store this DTC.

MONITOR DESCRIPTION

The TCM monitors the current flow to the shift solenoid valves. When the ignition switch is ON, if the TCM detects that current is flowing to the shift solenoid valves even though current cut was requested, it will store this DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

CONFIRMATION DRIVING PATTERN

HINT:

• After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
• When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

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1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
2. Turn the ignition switch off and wait for 2 minutes or more.
3. Turn the ignition switch to ON and wait for 2 minutes or more. [*1]

   HINT:

   [*1]: Normal judgment procedure.

   The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

4. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
5. Input the DTC: P17029F.
6. Check the DTC judgment result.

   GTS Display	Description
   NORMAL	DTC judgment completed System normal
   ABNORMAL	DTC judgment completed System abnormal
   INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
   N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

   HINT:

   • If the judgment result shows NORMAL, the system is normal.
   • If the judgment result shows ABNORMAL, the system has a malfunction.
   • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

NOTICE:

• Perform the universal trip to clear permanent DTCs.

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• Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.

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• Check that no DTCs are stored after performing initialization.

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• After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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PROCEDURE

(a) Clear the DTCs.

HINT:

Write down the currently output DTCs before clearing them.

(b) Turn the ignition switch off.

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(a) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.

(b) Connect the cable to the negative (-) auxiliary battery terminal.

(c) Turn the ignition switch to ON and wait for 1 minute or more.

(d) Turn the ignition switch off and wait for 2 minutes or more.

HINT:

This DTC is detected after the ignition switch is turned off.

(e) Enter the following menus:

(f) Read the DTCs using the GTS.

A

CHECK FOR INTERMITTENT PROBLEMS Click here Click here

B

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NEXT

PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here

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