Model Without Push Button Start

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode .
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 .

Fig 1: Model Without Push Button Start Engine Electrical System Wiring Diagram (Starter Motor Circuit)

Courtesy of SUBARU OF AMERICA, INC.

CHECK BATTERY .
Check the battery. Ref. to STARTING/CHARGING SYSTEMS(H4DO)>Battery .

Is the battery OK?
- Yes: Go to 2 .
- No: Charge or replace the battery. Ref. to STARTING/CHARGING SYSTEMS(H4DO)>Battery .
CHECK OPERATION OF STARTER MOTOR .
Does the starter motor operate?
- Yes: Go to 3 .
- No: Go to 4.
CHECK DTC .
Are any DTCs displayed? Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Read Diagnostic Trouble Code (DTC)>OPERATION .
- Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>List of Diagnostic Trouble Code (DTC) .
- No: Check ignition control system. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostics for Engine Starting Failure>IGNITION CONTROL SYSTEM .
CHECK INPUT SIGNAL FOR STARTER MOTOR .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from starter motor.
3. Turn the ignition switch to START.
4. Measure the voltage between the starter motor connector and the engine ground.
  Connector & terminal
  
  (B14) No. 1 (+) - Engine ground (-):
  
  NOTE: Place the select lever in "P" range or "N" range.
Is the voltage 10 V or more?
- Yes: Check the starter motor. Ref. to STARTING/CHARGING SYSTEMS(H4DO)>Starter .
- No: Go to 5 .
CHECK HARNESS BETWEEN BATTERY AND IGNITION SWITCH CONNECTOR .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ignition switch.
3. Measure the power supply voltage between ignition switch connector and chassis ground.
  Connector & terminal
  
  (B72) No. 4 (+) - Chassis ground (-):
  
  (B72) No. 5 (+) - Chassis ground (-):
Is the voltage 10 V or more?
- Yes: Go to 6 .
- No: Repair the power supply circuit.
CHECK IGNITION SWITCH .
Measure the resistance between ignition switch terminals after turning the ignition switch to START position.

Terminals

No. 3 - No. 4:

No. 5 - No. 7:

Is the resistance less than 1 Ω?
- Yes: Go to 7 .
- No: Replace the ignition switch. Ref. to SECURITY AND LOCKS>Ignition Key Lock>REPLACEMENT .
CHECK INPUT VOLTAGE OF STARTER RELAY .
1. Turn the ignition switch to OFF.
2. Remove the starter relay.
3. Connect the connector to ignition switch.
4. Measure the voltage between starter relay connector and chassis ground after turning the ignition switch to START position.
  Connector & terminal
  
  (B225) No. 2 (+) - Chassis ground (-):
  
  (B225) No. 3 (+) - Chassis ground (-):
Is the voltage 10 V or more?
- Yes: Go to 8 .
- No: Check the following item and repair if necessary.
  - Blown out of fuse
  - Open or short circuit to ground in harness between starter relay and ignition switch connector
CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance of harness between ECM and starter relay connector.
  Connector & terminal
  
  (B134) No. 14 - (B225) No. 5:
Is the resistance less than 1 Ω?
- Yes: Go to 9 .
- No: Repair the open circuit of harness between ECM and starter relay connector.
CHECK STARTER RELAY .
1. Connect the battery to starter relay terminals No. 3 and No. 5.
2. Measure the resistance between starter relay terminals.
  Terminals
  
  No. 1 - No. 2:
Is the resistance less than 1 Ω?
- Yes: Go to 10 .
- No: Replace the starter relay. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Electrical Component Location .
CHECK HARNESS BETWEEN STARTER RELAY AND INHIBITOR SWITCH CONNECTOR .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from inhibitor switch.
3. Measure the resistance of harness between starter relay connector and inhibitor switch connector.
  Connector & terminal
  
  (B225) No. 1 - (T7) No. 6:
Is the resistance less than 1 Ω?
- Yes: Go to 11 .
- No: repair the harness and connector.
  NOTE:
  In this case, repair the following item:
  - Open circuit in harness between starter relay connector and inhibitor switch connector
  - Poor contact of coupling connector
CHECK HARNESS BETWEEN INHIBITOR SWITCH AND STARTER MOTOR .
Measure the resistance of harness between the inhibitor switch connector and starter motor.

Connector & terminal

(T7) No. 9 - (B14) No. 1:

Is the resistance less than 1 Ω?
- Yes: Go to 12 .
- No: repair the harness and connector.
  NOTE:
  In this case, repair the following item:
  - Open circuit in harness between inhibitor switch connector and starter motor
  - Poor contact of coupling connector
CHECK INHIBITOR SWITCH .
1. Place the select lever in "P" range and "N" range.
2. Measure the resistance between inhibitor switch terminals.
  Terminals
  
  No. 6 - No. 9:
Is the resistance less than 1 Ω?
- Yes: Check the engine control module (ECM) power supply and ground line. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostics for Engine Starting Failure>CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MODULE (ECM) .
- No: Replace the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>Inhibitor Switch .