Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
![]() | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to "Starter Relay circuit inspection" procedure. |
IG KEY "OFF".
Disconnect Starter Relay.
IG KEY "ON"
Measure the voltage between control terminal of Starter Relay harness connector and chassis ground.
Specification : Approx 4.3V
Is the measured voltage within specification ?
![]() | ▶ Go to " Output Power Circuit Inspection" procedure. |
![]() | ▶ Repair Short to ground in control circuit, and go to "Verification of vehicle Repair" procedure. |
IG KEY "OFF".
Disconnect Starter Relay.
Measure the resistance between power supply to starter relay and Starter motor ST terminal.
Specification : below 1Ω
Is the measured resistance within specification ?
![]() | ▶ Go to "Component inspection" procedure. |
![]() | ▶ Repair Open or Short to ground in control circuit, and go to "Verification of vehicle Repair" procedure. |