Toyota Avalon Service & Repair Manual: Control Module Processor System Internal Failure (P060604,P060629,P06062A,P060647)

Toyota Avalon Service & Repair Manual / Engine / 2gr-fks Engine Control / Sfi System / Control Module Processor System Internal Failure (P060604,P060629,P06062A,P060647)

MONITOR DESCRIPTION

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from these CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store a DTCs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P060604

Control Module Processor System Internal Failure

ECM main CPU malfunction (1 trip detection logic)

ECM

Comes on

DTC stored

SAE Code: P0606

P060629

Control Module Processor Signal Invalid

ECM main CPU malfunction (1 trip detection logic)

ECM

Comes on

DTC stored

SAE Code: P0606

P06062A

Control Module Processor Signal Stuck in Range

ECM main CPU malfunction (1 trip detection logic)

ECM

Comes on

DTC stored

SAE Code: P0606

P060647

Control Module Processor Watchdog/Safety MCU Failure

ECM main CPU malfunction (1 trip detection logic)

ECM

Comes on

DTC stored

SAE Code: P0606

MONITOR STRATEGY

Related DTC

P0606: ECM/PCM processor performance

Required Sensors/Components (Main)

ECM

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

2 times

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All

Monitor runs whenever the following DTCs are not stored

None

Case 1, Case 2 and Case 3

Both of the following conditions are met

-

Write Inhibit

Permit

Time after Write status forbiddance to permit

0.5 seconds or more

Case 4 and Case 5

All of the following conditions are met

-

Battery voltage

8 V or higher

Engine switch

On (IG)

Starter

Off

Write Inhibit

Permit

Time after Write status forbiddance to permit

0.5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

Case 1

One of the following conditions is met

5 seconds or more

ROM check sum

Error

RAM Read/Write check

Fail

Specific software routine operation period check

Fail

Software functional check

Fail

Case 2

Following condition is met

40 times or more

Specific software routine operation period check

Fail

Case 3

One of the following conditions is met

A or B

A. Following condition is met

More than 30 seconds

Specific software operation A validity check

Fail

B. Following condition is met

More than 30 seconds

Specific software operation B validity check

Fail

Case 4

Following condition is met

25 times or more

DMA communication

No response

Case 5

Following condition is met

8 times or more

Watchdog from monitoring processor

Not toggle

CPU reset

Occurred

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the Techstream off.
  6. Turn the engine switch off.
  7. Disconnect the Techstream.
  8. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
  9. Connect the cable to the negative (-) battery terminal.
  10. Connect the Techstream to the DLC3.
  11. Turn the engine switch on (IG).
  12. Turn the Techstream on.
  13. Wait 1 second or more [A].
  14. Enter the following menus: Powertrain / Engine / Trouble Codes [B].
  15. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  16. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  17. Input the DTC: P060604, P060629 or P060647.
  18. Check the DTC judgment result.

    Techstream 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

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • [A] to [B]: Normal judgment procedure.

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

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CAUTION / NOTICE / HINT

NOTICE:

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

Click here

HINT:

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTC.

Powertrain > Engine > Clear DTCs

(e) Turn the engine switch off.

NEXT

2.

READ OUTPUT DTC (DTC P060604, P060629 OR P060647)

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

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

(c) Connect the Techstream to the DLC3.

(d) Turn the engine switch on (IG).

(e) Turn the Techstream on.

(f) Wait 1 second or more.

(g) Enter the following menus: Powertrain / Engine / Trouble Codes.

(h) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTC P060604, P060629 or P060647 is output

B

A

CHECK FOR INTERMITTENT PROBLEMS

B

REPLACE ECM

    Control Module Performance Bank 2 Component Internal Failure (P060596,P060796)

    Starter Relay Circuit Short to Battery (P061512)

    See More:

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