3.
Has a problem been found ?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "CAN Communication Resistor Inspection" procedure. |
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. |
IG key "OFF".
Attach all connectors including EMS-ECU, TPMS, SAS, LKAS and FATC.
Measure the resistance between the terminal #3 and #11 of the data link connector.
Specification : Approx 60 Ω
Does the measured value fall within specification ?
| ▶ Check connectors between ABS, TCS, ESP modules and LKAS 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 Repair” procedure. ▶ 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. |
IG key "OFF".
Remove yaw-rate and lateral G sensor and LKAS ECU connectors.
Measure the resistance between the CAN High terminal connected to the LKAS ECU connector and the CAN High terminal connected to the ABS and ESP connectors.
Measure the resistance between the CAN Low terminal connected to the LKAS ECU connector and the CAN Low terminal connected to the ABS and ESP connectors.
Specification : Approximately ≤ 1 Ω
Is the measured voltage within specification ?
| ▶ Check yaw-rate and lateral G sensor 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 is ∞ Ω , check for and repair the open of CAN High and Low lines, and then perform the “Verification of Vehicle Repair” procedure. ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
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
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
Is the measured voltage within specification ?
| ▶ Replace the yaw-rate and lateral G sensor with a working unit. If the replaced unit works properly, check to see whether the system works properly. ▶ Replace the ABS/TCS/ESP and Cluster with a working unit. If the replaced unit works properly, check to see whether the system works properly. |
| ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
