1.
Check Main Relay
(1)
IG "OFF"
(2)
Disconnect Main Relay
(3)
Measure resistance between terminal 5 and 3 of Main Relay
(4)
Measure resistance between terminal 4 and 2 of Main Relay.
a.
Specification :
Terminal | Continuity |
3 ~ 5 | NO |
2 ~ 4 | YES (Approx. 70Ω ~ 120Ω) |
(5)
Is the measured reisistance within specification ?
YES
▶ Substitute with a known - good PCM and check for proper operation.
If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.
caution
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
NO
▶ Substitute with a known - good Main Relay and check for proper operation.
If the problem is corrected, replace Main Relay and go to "Verification of Vehicle Repair"procedure.
