TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect all the Glow Plug harness connectors.
Remove the appropriate Glow Plug Relay.
Connect a jumper wire across the Glow Plug Relay connector cavities 30 and 87.
Using a 12-volt test light connected to ground, check each Glow Plug Relay Output
circuit at the appropriate Glow Plug harness connector.
Is the test light on for the appropriate circuits?
All
Yes
→
Replace the appropriate Glow Plug Relay.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Repair the Glow Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
256
DRIVEABILITY - DIESEL
*CHECKING THE GLOW PLUG OPERATION —
Continued