DTC P0607 Control Module Performance

DTC DETECTING CONDITION:

Immediately at fault recognition
GENERAL DESCRIPTION < Ref. to DTC P0607 CONTROL MODULE PERFORMANCE , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Erroneous idling
Poor driving performance

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. > and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.

WIRING DIAGRAM:

Fig 1: Control Module - Wiring Diagram

DTC P0607 CONTROL MODULE PERFORMANCE - DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK INPUT VOLTAGE OF ECM. Turn the ignition switch to ON. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B134) No. 7 (+) - Chassis ground (-): (B135) No. 2 (+) - Chassis ground (-):	Is the voltage 10 - 13 V?	Go to step 2.	Repair the open or ground short circuit of power supply circuit.
2 CHECK INPUT VOLTAGE OF ECM. Start the engine. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B134) No. 7 (+) - Chassis ground (-): (B135) No. 2 (+) - Chassis ground (-):	Is the voltage 13 - 15 V?	Go to step 3.	Repair the open or ground short circuit of power supply circuit.
3 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and electronic throttle control. Measure the resistance of harness between ECM and electronic throttle control connector. Connector & terminal (E57) No. 5 - (B134) No. 19: (E57) No. 3 - (B134) No. 29:	Is the resistance less than 1 Ω?	Go to step 4.	Repair the open circuit of harness between ECM and electronic throttle control connector.
4 CHECK ECM GROUND HARNESS. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B134) No. 3 (+) - Chassis ground (-): (B134) No. 5 (+) - Chassis ground (-): (B137) No. 1 (+) - Chassis ground (-): (B137) No. 2 (+) - Chassis ground (-): (B137) No. 3 (+) - Chassis ground (-): (B137) No. 7 (+) - Chassis ground (-):	Is the voltage less than 1 V?	Repair the poor contact of ECM connector. Replace the ECM if defective. < Ref. to ENGINE CONTROL MODULE (ECM) . >	Further tighten the engine ground terminal.