10998457

1.

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.

2.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3.

Has a problem been found?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Power Circuit Inspection" procedure.

1.

IG "ON".

2.

Measure voltage between power terminal of the G sensor harness connector and chassis ground.

Specification : Approx. 5V

3.

Is the measured value within specifications?

▶ Fault is intermittent caused by poor connection. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary, and then go to "Verification of Vehicle Repair" procedure.

▶ Repair short to ground in power circuit between HECU harness connector and G sensor harness connector, and then go to "Verification of Vehicle Repair" procedure.

▶ If there is no short circuit in power circuit, substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU, and then go to "Verification of Vehicle Repair" procedure.

note

※ In a case of replacing HECU, perform following functions

1) "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to C126104) -ESP(ESC) only

2) "Longituginal Sensor Calibration" for Longituginal sensor offset correction (refer to C128504) - ESP(ESC) only

3) "Variant Coding" for option coding (refer to C170204)