CAN BUS Terminus Resistance Check (Component side)
Key "OFF".
Disconnect PCM connector.
Measure the resistance between terminal 12 and 27 of PCM connnector. [A/T]
Measure the resistance between terminal 62 and 84 of ECM connnector. [M/T](Component side)
Specification : 120Ω ± 10Ω
Is the measured resistance within specification?
YES
Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure.
NO
Substitute with a known - good ECM and check for proper operation.
If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure.
