DTC P0606: Control Module Processor: Wiring Diagram

Engine electrical system non-turbo model (without push button start) < Ref. to NON-TURBO MODEL (WITHOUT PUSH BUTTON START) , WIRING DIAGRAM, Engine Electrical System. >
Engine electrical system non-turbo model (with push button start) < Ref. to NON-TURBO MODEL (WITH PUSH BUTTON START) , WIRING DIAGRAM, Engine Electrical System. >

Fig 1: Control Module Processor - Wiring Diagram
Courtesy of SUBARU OF AMERICA, INC.

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK INPUT VOLTAGE OF ECM . Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B136) No. 6 (+) - Chassis ground (-): (B137) No. 1 (+) - 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 and chassis ground. Connector & terminal (B136) No. 6 (+) - Chassis ground (-): (B137) No. 1 (+) - 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 CONNECTOR . Turn the ignition switch to OFF. Disconnect the connectors from ECM and electronic throttle control. Measure the resistance of harness between ECM and electronic throttle control connector. Connector & terminal (B134) No. 19 - (E57) No. 5: (B134) No. 29 - (E57) No. 3:	Is the resistance less than 1 Ω?	Go to step 4 .	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and electronic throttle control connector Poor contact of coupling connector
4 CHECK ECM GROUND HARNESS . Connect all connectors. Turn the ignition to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B134) No. 3 (+) - Chassis ground (-): (B134) No. 4 (+) - Chassis ground (-): (B136) No. 1 (+) - Chassis ground (-): (B136) No. 2 (+) - Chassis ground (-): (B136) No. 3 (+) - Chassis ground (-):	Is the voltage less than 1 V?	Repair the poor contact of ECM connector.	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in ground circuit Loose engine ground terminal Poor contact of coupling connector