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P0607





2AZ-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 (HO2) 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.

4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) DTC Check / Clear [B].

5. Turn the ignition switch off.

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

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

12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

13. Input the DTC: P0607, P0136, P0137 or P0138.

14. Check the DTC judgment result [I].





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

HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [D] through [H].

15. If the test result is UNKNOWN, enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

16. Read Pending DTCs.

HINT
If a pending DTC is output, the system is malfunctioning.

17. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK 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 the DTCs DTC Check / Clear.

Result:





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

2. INSPECT DTC (P0136, P0137 OR P0138)

(a) Inspect 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 more).

NEXT -- INSPECT ECM

3. CHECK FOR EXHAUST GAS LEAK

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

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

If any exhaust gas leaks are present, repair it 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, a malfunction in the heated oxygen sensor circuit is suspected.
- 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 DTC Check / Clear.

(b) Connect the Techstream to the DLC3.

(c) Start the engine.

(d) Turn the Techstream on.

(e) Warm up the engine until the engine coolant temperature becomes 75° (167°F) or more.

(f) Perform the driving pattern.

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

(2) Drive the vehicle by 38 to 50 mph (60 to 80 km/h) for 5 minutes or more.

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

(h) Read the DTCs.

Result:





C -- INSPECT ECM

B -- REPLACE ECM Components
A -- Continue to next step.

5. INSPECT DTC (P0136, P0137 OR P0138)

(a) Inspect 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 more).

NEXT -- Continue to next step.

6. INSPECT ECM

(a) Clear the DTC DTC Check / Clear.

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

(c) Connect the Techstream to the DLC3.

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

(e) Turn the Techstream on.

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

(g) Read the DTCs Engine Control System - SFI System.

Result:





B -- REPLACE ECM Components

A -- END
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