DTC P062D: Fuel Injector Driver Circuit Performance Bank 1: Notes

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Engine does not start.
Engine stalls.

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Inspection Mode>PROCEDURE .

Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CHECK DTC .
Read the engine DTC using the Subaru Select Monitor or general scan tool. Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Read Diagnostic Trouble Code (DTC) .

Is DTC other than P062D displayed? (Current malfunction)

Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>List of Diagnostic Trouble Code (DTC) .

No: Go to 2.
CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between ECM connectors.
  Connector & terminal
  
  #1 (E158) No. 11 - (E158) No. 12:
  
  #2 (E158) No. 23 - (E158) No. 24:
  
  #3 (E158) No. 35 - (E158) No. 36:
  
  #4 (E158) No. 47 - (E158) No. 48:
Is resistance 1.89 - 2.31 Ω at 20°C (68°F)?

Yes: Go to 4.

No: Go to 3.
CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR .
1. Disconnect the connector from fuel injector.
2. Measure the resistance of harness between ECM connector and defective fuel injector connector.
  Connector & terminal
  
  #1 (E158) No. 12 - (E5) No. 1:
  
  #1 (E158) No. 11 - (E5) No. 2:
  
  #2 (E158) No. 24 - (E16) No. 1:
  
  #2 (E158) No. 23 - (E16) No. 2:
  
  #3 (E158) No. 36 - (E6) No. 1:
  
  #3 (E158) No. 35 - (E6) No. 2:
  
  #4 (E158) No. 48 - (E17) No. 1:
  
  #4 (E158) No. 47 - (E17) No. 2:
Is the resistance less than 1 Ω?

Yes: Repair or replace the following items.
- Poor contact of fuel injector connector
- Defective fuel injector Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>Fuel Injector .
No: Repair the open circuit of the harness between the ECM connector and fuel injector connector.
CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR .
Measure the resistance between the ECM connector and engine ground.

Connector & terminal

#1 (E158) No. 12 - Engine ground:

#1 (E158) No. 11 - Engine ground:

#2 (E158) No. 24 - Engine ground:

#2 (E158) No. 23 - Engine ground:

#3 (E158) No. 36 - Engine ground:

#3 (E158) No. 35 - Engine ground:

#4 (E158) No. 48 - Engine ground:

#4 (E158) No. 47 - Engine ground:

Is the resistance 1 MΩ or more?

Yes: Repair the poor contact of ECM connector.

No: Go to 5.
CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR .
1. Disconnect the connector from fuel injector.
2. Measure the resistance between ECM connector and engine ground on defective fuel injectors.
  Connector & terminal
  
  #1 (E158) No. 12 - Engine ground:
  
  #1 (E158) No. 11 - Engine ground:
  
  #2 (E158) No. 24 - Engine ground:
  
  #2 (E158) No. 23 - Engine ground:
  
  #3 (E158) No. 36 - Engine ground:
  
  #3 (E158) No. 35 - Engine ground:
  
  #4 (E158) No. 48 - Engine ground:
  
  #4 (E158) No. 47 - Engine ground:
Is the resistance 1 MΩ or more?

Yes: Replace the faulty fuel injector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (EXCEPT FOR STI)>Fuel Injector .

No: Repair the short circuit to ground in harness between ECM connector and fuel injector connector.