DTC P0606 Control Module Processor

DIAGNOSIS START CONDITION:

At DCCD control module initialization (when power is turned to ON)

Malfunction judgment criteria:

When CAN function of microcomputer is abnormal (when CAN register read/write is abnormal)

TROUBLE SYMPTOM:

WIRING DIAGRAM:

Drivers control center differential control system <Ref. to Driver's Control Center Differential Control System .>

Fig 1: Control Module Processor Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK INPUT VOLTAGE OF DCCD CONTROL MODULE. Turn the ignition switch to ON. Measure the voltage between DCCD control module and chassis ground. Connector & terminal (B380) No. 11 (+) - 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 DCCD CONTROL MODULE. Start the engine. Measure the voltage between DCCD control module and chassis ground. Connector & terminal (B380) No. 11 (+) - 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 DCCD CONTROL MODULE GROUND HARNESS. Turn the ignition switch to ON. Measure the voltage between DCCD control module and chassis ground. Connector & terminal (B380) No. 28 (+) - Chassis ground (-): (B380) No. 29 (+) - Chassis ground (-): (B380) No. 30 (+) - Chassis ground (-): (B380) No. 31 (+) - Chassis ground (-):	Is the voltage less than 1 V?	Check for poor contact of connector, if a fault is not found, replace the DCCD control module. <Ref. to Driver's Control Center Differential Control Module .>	Repair the harness and connector.