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Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damage of component.

Perform checking procedure as follows.

(1)

Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

(2)

Check connecting condition of ECM and component connector : Check terminal separation, damage of locking device and connecting condition between terminal and wiring.

note

Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. (After checking, reconnect the pin at correct position.)

Is the problem found?

	▶ Repair the trouble causing part and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Power Circuit Inspection".

Check voltage between ' power' terminal of GLOW Relay harness connector and chassis ground.

Specification : 10.5V ~ 14.5V

Is the measured value within specification?

	▶ Go to "Check ON/START input circuit" as follow.
	▶ Repair open / short between 'GLOW FUSIBLE LINK 80A' terminal in 'Fusible link box' and 'Memory power' terminal of 'GLOW RELAY', and go to 'Verification of Vehicle Repair" procedure.

Check voltage between 'Control' terminal of GLOW Relay harness connector and chassis ground.

Specification : 3.2V~3.7V

Is the measured value within specification?

▶ Go to "Component Inspection" procedure.

▶ If output voltage is not detected, go to "Open circuit Inspection " procedure.

▶ If output voltage is higher than specification, Chect the Short to Battery in circuit and go to "Verification of Vehicle Repair" procedure.

Check resistance between 'Control' terminal of GLOW Relay harness connector and 'Control' terminal of ECM terminal.

Specification : Continuity (Below 1.0Ω)

Is the measured value within specification?

	▶ Repair short between 'Control' terminal of 'GLOW Relay' harness connector and 'Control' terminal of 'ECM' harness connector and go to "Verification of Vehicle Repair" procedure.
	▶ Repair open between 'Control' terminal of 'GLOW Relay' harness connector and 'Control' terminal of 'ECM' harness connector and go to "Verification of Vehicle Repair" procedure.