10650843

Terminal and Connector Inspection

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 "CAN Communication Resistor Inspection" procedure.

CAN Communication Resistor and Line Inspection

■ CAN Communication Resistor and Line Inspection 1

IG key "OFF".

Attach all connectors including EMS-ECU, TPMS, VDC, LKAS and FATC.

Measure the resistance between the terminal #3 and #11 of the data link connector.

Specification : Approx. 60 Ω

Is the measured voltage within specification ?

▶ Check EMS-ECU and LKAS connectors for poor contact such as shifted terminal, improper pin assignment, loosened pin terminal or improper pin terminal contact. Repair as needed and perform the “Verification of Vehicle Repair” procedure.

▶ Go to next procedure.

▶ If the measured resistance falls out of the normal range, check and replace EMS-ECU or Cluster including the CAN terminal resistor, and then perform the “Verification of Vehicle Repair” procedure.

▶ If the measured resistance is below 10 Ω, check for and repair the short-circuited spots of CAN High and Low lines, and then perform the “Verification of Vehicle.

▶ If the measured resistance is ∞ Ω , check for and repair the open of CAN High and Low lines, and then perform the “Verification of Vehicle Repair” procedure.

▶ Go to next procedure.

■ CAN Communication Resistor and Line Inspection 2

IG key "OFF".

Remove the connectors of EMS-ECU and Cluster.

Measure the resistance between the terminal #3 and #11 of the data link connector.

Specification : Approx. 60 Ω

Is the measured voltage within specification ?

	▶ Go to next procedure.
	▶ Check EMS-ECU and Cluster connectors for poor contact such as shifted terminal, improper pin assignment, loosened pin terminal or improper pin terminal contact. Repair as needed and perform the “Verification of Vehicle Repair” procedure.

CAN Communication Line Inspection

■ CAN Communication Line power short Inspection

1.IG key "OFF".

Remove the connectors of all modules.

IG key "ON".

Measure the voltage between the terminal #3 (CAN High) of the data link connector and the chassis ground.

Measure the voltage between the terminal #11 (CAN Low) of the data link connector and the chassis ground.

Specification : Approx. 0V

■ CAN Communication Line Short-circuit Inspection

IG key "OFF".

Remove the connectors of all modules.

Measure the resistance between the terminal #3 (CAN High) of the data link connector and the chassis ground.

Measure the resistance between the terminal #11 (CAN Low) of the data link connector and the chassis ground.

Specification : ∞ Ω

10.

Is the measured voltage within specification ?

▶ Check LKAS and Cluster connectors for poor contact such as shifted terminal, improper pin assignment, loosened pin terminal or improper pin terminal contact. Repair as needed and perform the “Verification of Vehicle Repair” procedure.

▶ Replace Cluster or IPM with a working unit. If the replaced unit works properly, replace Cluster or IPM with a new unit, and then perform the “Verification of Vehicle Repair” procedure.

▶ Replace LKAS ECU with a working unit. If the replaced unit works properly, replace LKAS ECU with a new unit, and then perform the “Verification of Vehicle Repair” procedure.

▶ Repair as necessary and go to "Verification of vehicle Repair" procedure.