Impreza & Legacy A/T
- Turn ignition switch to START position and check for near battery voltage at starter solenoid terminal No. 50 (Red/Yellow wire). If near battery voltage exists and starter does not crank, repair or replace starter. If voltage does not exist, check for voltage at inhibitor switch Red/Yellow wire terminal.
- Inhibitor switch is located on gear select lever, under console. Ensure lever is in Park or Neutral position. If voltage exists at inhibitor switch Red/Yellow wire terminal, check for open or short in wiring to starter. If low or no voltage exists at inhibitor switch, check inhibitor switch Blue/Red wire for input voltage when ignition switch is turned to START position.
- If voltage exists at inhibitor switch Blue/Red wire terminal, replace inhibitor switch. If voltage does not exist at inhibitor switch Blue/Red wire terminal, check for near battery voltage at ignition switch "S" terminal (Blue/Red wire) when ignition switch is turned to START position. If voltage does not exist at ignition switch Blue/Red wire, check for battery voltage to ignition switch. If battery voltage exists at battery terminal (BAT) of switch, replace ignition switch.
Scheme 10
- Turn ignition switch to START position and check for near battery voltage at starter solenoid terminal No. 50 (Red/Yellow wire). If near battery voltage exists and starter does not crank, repair or replace starter. If voltage does not exist, check for voltage at terminal No. 3 (Red/Yellow wire) of interlock relay with clutch pedal fully pressed to floor. (Scheme 10)
- When clutch pedal is depressed, clutch switch grounds interlock relay terminal No. 1 (Green/Yellow wire), which energizes interlock relay. Interlock relay has a Blue 4-terminal connector and is located on brake pedal bracket, next to brakelight switch. Clutch switch is located at top of clutch pedal arm.
- If voltage exists at relay terminal No. 3 (Red/Yellow wire), repair wiring between relay and starter. If voltage does not exist, check for near battery voltage at interlock relay terminals No. 2 and 4 (Blue/Red wires) when ignition switch is turned to START position. (Scheme 10) If voltage exists at relay terminals No. 2 and 4, go to step 5).
- If voltage does not exist at relay terminals No. 2 and 4, check for voltage to ignition switch BAT terminal and from ignition switch START terminal. Repair wiring or replace switch as required. If voltage exists at START terminal, repair Blue/Red wiring between ignition switch and relay terminals No. 2 and 4.
- If voltage exists at relay terminals No. 2 and 4, ground interlock relay terminal No. 1 (Green/Yellow wire) using jumper wire. Check for near battery voltage at relay terminal No. 3 (Red/Yellow wire). If voltage exists, replace clutch switch. If voltage does not exist, replace relay.
Impreza & Legacy M/T
- Interlock relay has a Blue 4-terminal connector and is located on brake pedal bracket next to brakelight switch. Locate and unplug relay.
- Connect test light to terminal No. 3 (Red/Yellow wire) of interlock relay. (Scheme 10) Using jumper wire, apply 12 volts to terminals No. 2 and 4 (Blue/Red wires) of relay. Using another jumper wire connected to ground, momentarily touch terminal No. 1 (Green/Yellow wire) of relay. If test light does not illuminate, replace relay.