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

1. -

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Engine does not start.
Engine stalls.

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>General Description>PREPARATION TOOL>HOW TO USE CHECK BOARD .

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Basic Diagnostic Procedure>PROCEDURE .

CHECK DTC .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .
  DTC Check
  
  Is DTC other than P062D displayed? (Current malfunction)
  
  Yes : Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostic Trouble Code (DTC)>LIST .
  
  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 (E159) No. 1 - (E159) No. 2:
  
  #2 (E159) No. 9 - (E159) No. 10:
  
  #3 (E159) No. 17 - (E159) No. 18:
  
  #4 (E159) No. 25 - (E159) No. 26:
  
  Is the resistance approx. 1.5 Ω (at 23°C (73°F))?
  
  Yes : Go to 4.
  
  No : Go to 3.
CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR (OPEN) .
1. Disconnect the connector from fuel injector.
2. Measure the resistance of harness between ECM connector and defective fuel injector connector.
  Connector & terminal
  
  #1 (E159) No. 1 - (E5) No. 1:
  
  #1 (E159) No. 2 - (E5) No. 2:
  
  #2 (E159) No. 9 - (E16) No. 1:
  
  #2 (E159) No. 10 - (E16) No. 2:
  
  #3 (E159) No. 17 - (E6) No. 1:
  
  #3 (E159) No. 18 - (E6) No. 2:
  
  #4 (E159) No. 25 - (E17) No. 1:
  
  #4 (E159) No. 26 - (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) (H4DOTC)>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 (E159) No. 1 - Engine ground:

#1 (E159) No. 2 - Engine ground:

#2 (E159) No. 9 - Engine ground:

#2 (E159) No. 10 - Engine ground:

#3 (E159) No. 17 - Engine ground:

#3 (E159) No. 18 - Engine ground:

#4 (E159) No. 25 - Engine ground:

#4 (E159) No. 26 - 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 (SHORT TO GROUND) .
1. Disconnect the connector from fuel injector.
2. Measure the resistance between ECM connector and engine ground on defective fuel injectors.
  Connector & terminal
  
  #1 (E159) No. 1 - Engine ground:
  
  #1 (E159) No. 2 - Engine ground:
  
  #2 (E159) No. 9 - Engine ground:
  
  #2 (E159) No. 10 - Engine ground:
  
  #3 (E159) No. 17 - Engine ground:
  
  #3 (E159) No. 18 - Engine ground:
  
  #4 (E159) No. 25 - Engine ground:
  
  #4 (E159) No. 26 - Engine ground:
  
  Is the resistance 1 MΩ or more?
  
  Yes : Replace the faulty fuel injector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL INJECTOR .
  
  No : Repair the short circuit to ground in harness between ECM connector and fuel injector connector.