Component Inspection - Hyundai GENESIS COUPE BK 2010 Manual

Terminal and Connector Inspection
1. Many malfunctions in the electrical system are caused by poor harness and terminal condition.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration,
and/or damage.
3. Has a problem been found?
▶ Repair if necessary and then go to "Verification of Vehicle Repair" procedure.
▶ Go to "CAN Signal Circuit Inspection" procedure.
CAN Signal Circuit Inspection
■ Short Check (to ground)
1. Ignition "OFF" & Engine "OFF".
2. Disconnect TPMS ECU, PCM and ABS ECU connector.
3. Measure resistance between CAN LOW terminal, CAN HIGH terminal of the TPMS ECU harness connector and
chassis ground.
Specification : ∞ Ω
4. Is the measured resistance within specifications?
▶ Go to next procedure.
▶ If abnormal resistance is detected in CAN HIGH circuit, Repair short to ground in CAN HIGH
circuit and then go to "Verification of vehicle Repair" procedure.
▶ If abnormal resistance is detected in CAN LOW circuit, Repair short to ground in CAN LOW
circuit and then go to "Verification of vehicle Repair" procedure.
■ CAN BUS Resistance Check
1. Ignition "OFF" & Engine "OFF".
2. Disconnect TPMS ECU, PCM and ABS ECU connector.
3. Measure resistance between CAN LOW terminal and CAN HIGH terminal of the TPMS ECU harness connector.
Specification : Approx. 120Ω
4. Is the measured resistance within specifications?
▶ Go to "Component Inspection" procedure.
▶ In case of the resistance "approx. 1Ω" : Repair mutual short in CAN signal circuit of the TPMS
ECU and then go to "Verification of vehicle Repair" procedure.
▶ In case of the resistance "∞ Ω" : Repair open in CAN signal circuit of the TPMS ECU and then
go to "Verification of vehicle Repair" procedure.
▶ In case of the resistance "approx. 120 Ω" : Check the resistances(122Ω) in I/P junction box
and ECM, repair as necessary and then go to "Verification of vehicle Repair" procedure.

Component Inspection