Check Glow relay.
Ignition "OFF" & Engine "OFF".
Disconnect Glow relay.
Measure resistance between terminal 2 and 3 of glow relay.
Specification : 55 ± 5Ω
Is the measured resistance within specifications ?
YES
▶ Go to "Check Glow relay operation" as below.
NO
▶ Substitute with a known-good ECM and check for proper operation.
If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.
Check Glow relay operation.
Ignition "OFF" & Engine "OFF".
Connect Glow relay and Disconnect ECM connector.
Connect volt meter or test lamp with Glow plug connector (C206).
Ignition "ON".
Energize Glow relay by grounding terminal 18 of ECM harness connector or Select actuator test with scantool for operating glow relay.
Time to operate glow relay should not be over than 3 sec.
Because glow plug can be damaged or Battery can be discharged.
Is the glow relay operating correctly ?
YES
▶ 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 then go to "Verification of Vehicle Repair" procedure.
