DTC P0606 Control Module Processor: Wiring Diagram
Engine electrical system. < Ref. to the appropriate SYSTEM WIRING diagram article, Engine Electrical System. >
Courtesy of SUBARU OF AMERICA, INC. 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
(B136) No. 6 (+) - Chassis ground (-):
(B137) No. 1 (+) - Chassis ground (-):
|
Is the voltage 10 - 13 V? |
Go to step 2. |
Repair the open or short to ground in the power supply circuit. |
2 CHECK INPUT VOLTAGE OF ECM.
- Start the engine.
- Measure the voltage between ECM connector 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 short to ground in the 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 connector 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 connector 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 connector 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? |
Check the connector for poor contact and check the harness. Replace the ECM if no fault is found. < Ref. to
ENGINE CONTROL MODULE (ECM)
. > |
Repair the harness and connector.
NOTE:
In this case, repair the following item:
- Open circuit in ground circuit
- Further tightening of the engine ground terminal
- Poor contact of coupling connector
|