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Symptom:
*CHECKING THE GLOW PLUG OPERATION
CHECKING THE GLOW PLUGS
FUSED B+ CIRCUIT OPEN
GLOW PLUG RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
GLOW PLUG RELAY OUTPUT CIRCUIT SHORTED TO GROUND
GLOW PLUG RELAY OUTPUT CIRCUIT OPEN
GLOW PLUG RELAY
TEST
1
Turn the ignition off.
Disconnect the Glow Plug harness connectors for all cylinders.
Turn the ignition on.
With the DRBIII , actuate the Glow Plug 1 Relay.
Using a 12-volt test light connected to ground, probe Glow Plug harness connectors
1, 3 and 5 during actuator test.
With the DRBIII , actuate the Glow Plug 2 Relay.
Using a 12-volt test light connected to ground, probe Glow Plug harness connectors
2 and 4 during actuator test.
Does the test light cycle on and off at each Glow Plug harness connector during
actuation?
Yes → Go To 2
→ Go To 3
No
2
Refer to the Service Information and perform the Glow Plug Test.
Are all Glow Plugs operating properly?
Yes → Test Complete.
→ Replace the Glow Plug(s) as necessary.
No
3
NOTE: If the Glow Plug Relay fuse or fuselink is open, refer to the system
schematics for all circuits that are powered by the Glow Plug Relay fuse or
fuselink to determine the cause of the blown fuse/fuselink.
Remove the Glow Plug Relay of the affected cylinder(s).
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the Glow
Plug Relay connector.
Does the test light illuminate brightly?
Yes → Go To 4
→ Repair the Fused B+ (Fuse/Fuselink) circuit for an open.
No
POSSIBLE CAUSES
ACTION
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
223
APPLICABILITY
All
All
All
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