P0607

1NR-FE ENGINE CONTROL: SFI SYSTEM: P0607: Control Module Performance
P0607 - Control Module Performance

MONITOR DESCRIPTION

The ECM continuously monitors its internal processors (CPUs) and heated oxygen sensor transistors. This self-check ensures that the ECM is functioning properly.





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





CONFIRMATION DRIVING PATTERN





1. Stop the engine for 30 minutes or more [A].

2. Connect the Techstream to the DLC3.

3. Turn the ignition switch to ON and turn the Techstream on [B].

4. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

5. Turn the ignition switch off and wait for at least 30 seconds.

6. Turn the ignition switch to ON and turn the Techstream on [C].

7. Start the engine and wait 2 minutes [D].

8. Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher [E].

9. Idle the engine for 1 minute [F].

10. Accelerate the vehicle to 80 km/h (50 mph) and stop the vehicle [G].

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

11. Drive the vehicle at 56 to 80 km/h (35 to 50 mph) for 5 minutes or more [H].

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [I].

13. Read pending DTCs.

HINT
- If a pending DTC is output, the system is malfunctioning.
- 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: P0607, P0136, P0137 or P0138.

16. Check the DTC judgment result.





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 steps [E] through [I] again.

17. If no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- 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 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. CHECK FOR ANY OTHER DTCS OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(e) Read DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





B -- CHECK FOR EXHAUST GAS LEAK
A -- Continue to next step.

2. INSPECT DTC (P0136, P0137 OR P0138)

(a) Refer to the P0136, P0137 or P0138 flowchart.

HINT
- If P0136 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If P0137 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If P0138 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If DTC P0607 and P0136, P0137 or P0138 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or higher).

NEXT -- INSPECT ECM

3. CHECK FOR EXHAUST GAS LEAK

(a) Allow the engine to idle, and then rev the engine.

(b) Check for exhaust gas leaks around the heated oxygen sensor.

If any exhaust gas leaks are present, repair them and proceed to "Perform Confirmation Driving Pattern". If no exhaust gas leaks are present, proceed to "Perform Confirmation Driving Pattern".

HINT
- If no exhaust gas leaks are present, there may be a malfunction in the heated oxygen sensor circuit.
- If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the output voltage of the heated oxygen sensor.

NEXT -- Continue to next step.

4. PERFORM CONFIRMATION DRIVING PATTERN





(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Connect the Techstream to the DLC3.

(c) Start the engine.

(d) Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher.

(e) Perform the driving pattern.

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

(1) Accelerate the vehicle to 80 km/h (50 mph) and stop the vehicle.

(2) Drive the vehicle between 60 and 80 km/h (37 and 50 mph) for 5 minutes.

(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(g) Read DTCs.

Result





B -- REPLACE ECM Removal

C -- INSPECT ECM
A -- Continue to next step.

5. INSPECT DTC (P0136, P0137 OR P0138)

(a) Refer to the P0136, P0137 or P0138 flowchart.

HINT
- If P0136 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If P0137 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If P0138 is output, troubleshoot for that DTC first P0136. Then proceed to "Inspect ECM".
- If DTC P0607 and P0136, P0137 or P0138 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or higher).

NEXT -- Continue to next step.

6. INSPECT ECM

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON and turn the Techstream on.

(d) Stop the engine and wait for 30 minutes.

(e) Connect the Techstream to the DLC3.

(f) Start the engine and allow it to idle for 2 minutes.

(g) Turn the Techstream on.

(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(i) Read DTCs.

Result





B -- REPLACE ECM Removal

A -- END