Dtc P0606 Ecm / Pcm Processor

Engine Hybrid System. Corolla. Zre142 Aze141
2Zr-Fe Engine Control. Corolla. Zre142 Aze141

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

CONFIRMATION DRIVING PATTERN

INSPECTION PROCEDURE

READ OUTPUT DTC (DTC P0606)

DTC P0606 ECM / PCM Processor


MONITOR DESCRIPTION

The ECM continuously monitors its main CPU. This self-check ensures that the ECM is functioning properly. If outputs from the CPU is deviate from the standard, the ECM will illuminate the MIL and set the DTC immediately.

DTC No.
DTC Detection Condition
Trouble Area
P0606
ECM main CPU error (1 trip detection logic)
ECM

MONITOR STRATEGY


Related DTC
P0606: ECM range check
Required Sensors/Components (Main)
ECM
Required Sensors/Components (Related)
-
Frequency of Operation
Continuous
Duration
20 seconds: Case 2
Within 1 second: Others
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


Case 1 to 3
Monitor runs whenever the following DTCs are not present
None

Case 4 and 5
Monitor runs whenever the following DTCs are not present
None
Battery voltage
8 V or more
Ignition switch
ON
Starter
Off

TYPICAL MALFUNCTION THRESHOLDS


Case 1
Sensor reference voltage
2.4 V or less

Case 2
Compare resister A with B
Different

Case 3
Upper four bits of A/D result
Any of four bits is 1

Case 4
DMA communication
No response

Case 5
Watchdog from monitoring processor
Not toggle

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation) (COROLLA_ZRE142 RM000000PDK0ZAX.html).
  4. Turn the Techstream off.
  5. Turn the ignition switch off.
  6. Disconnect the Techstream.
  7. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
  8. Connect the cable to the negative (-) battery terminal.
  9. Connect the Techstream to the DLC3.
  10. Turn the ignition switch to ON and turn the Techstream on.
  11. Wait 20 seconds or more.
  12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
  13. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  14. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  15. Input the DTC: P0606.
  16. Check the DTC judgment result.

    Techstream Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
  17. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).
    HINT:
    1. If a permanent DTC is output, the system is malfunctioning.
    2. If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
1.READ OUTPUT DTC (DTC P0606)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to on.

  1. Turn the Techstream on.

  1. Clear DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

  1. Turn the ignition switch off and turn the Techstream off.

  1. Disconnect the Techstream.

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

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

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Wait 1 second or more.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0606 is output
    		B


B
REPLACE ECM (COROLLA_ZRE142 RM000001CN0030X.html)
A

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)