3.
Has a problem been found?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure |
 | ▶ Go to "CAN Signal 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 Signal Inspection" procedure. |
IG key "ON" , ENGINE "ON".
Connect 4WD ECM connector
Monitor signal waveform between CAN High/Low Line of 4WD ECM harness connector and chassis ground.
Specification : Signal Waveform & Data
The above value is only for reference.
The actual value may differ from it according to various engine condition.
Is CAN Signal display near the specified value?
| ▶ Fault is intermittent caused by poor contact in the sensor's and/or 4WD ECM connector or was repaired and 4WD ECM memory was not cleared. 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. |
| ▶ Go to "CAN comm. Line Inspection" procedure. |
IG key "OFF" , ENGINE "OFF".
Disconnect 4WD ECM connector
Measure resistance between CAN High Line of the 4WD ECM harness connector and CAN Low terminal of the 4WD ECM harness connector.
Specification : Approx. 60Ω
The above value is only for reference.
The actual value may differ from it according to various engine condition.
Is resistance display near the specified value?
| ▶ Fault is intermittent caused by open or short in CAN signal harnessor was repaired and 4WD ECM memory was not cleared. Go to the applicable troubleshooting procedure. |
| ▶ Check for open/short in CAN comunication line of 4WD ECM circuit. ▶ Check for the signal or component of Engine control module. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
