9256849

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 all connectors(and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

Has a problem been found ?

▶ Repair or replace as necessary and then, Go to "Verification of Vehicle Repair" procedue.

▶ In case LDWS ECU is replaced, Refer to "Component Inspection" procedure in DTC 1363 and perform LDWS Reference Point Calibration in the "Vehicle S/W Management" with GDS.

▶ Go to "Charging System Inspection" procedure.

Start the engine and turn the headlight, rear window defogger and all other electrical devices.

Measure voltage between (+) terminal and (-) terminal of battery while maintaining ENG. RPM at 2500 RPM.

Specification : Approx 14.5 V

Fig.1) GDS Multimeter voltage check

Is the parameter displayed within specifications?

▶ Go to "Power Circuit Inspection" procedure.

▶ Check for tension of drive belt, fuse, terminal of battery, all terminals of alternator are in good condition and check for damaged harness and poor connection between alternator and battery.

▶ Repair or replace as necessary and then, Go to "Verification of Vehicle Repair" procedue.

Measure voltage between LDWS ECU harness connector Pin No.12 and the chassis ground.

Specification : Battery (+) Voltage

Fig.1) GDS Multimeter voltage check

Is the measured voltage within specifications?

	▶ Go to "Ground Circuit Inspection" procedure.
	▶ Repair open or short in power circuit between battery and LDWS ECU harness connector and then go to "Verification of Vehicle Repair" procedure.

Measure resistance between ground terminal Pin No.8 of the LDWS ECU harness connector and chassis ground.

Specification : Below approx. 1Ω

Fig.1) GDS Multimeter resistance check

Is the measured resistance within specifications?

▶ Go to "Verification of Vehicle Repair" procedure.

▶ Carefully re-do this troubleshooting guide steps and then, Go to "Verification of Vehicle Repair" procedue.

▶ In case LDWS ECU is replaced, Refer to "Component Inspection" procedure in DTC 1363 and perform LDWS Reference Point Calibration in the "Vehicle S/W Management" with GDS.