KENR9126 201
Troubleshooting Section
If the diagnostic code does not recur, the
problem is reso
lved. Return the engine to
service.
If the diagnos
tic code recurs, replace the
ECM. Refer to electronic troubleshooting
Troubleshooting, “Replacing the ECM”. Verify
that the prob
lem is resolved.
STOP.
i04012449
Starting Aid (Glow P lug ) Relay
Circuit - Te
st
System Operation Description:
Note: If c
odes 0897-05 Glow Plug Start Aid Relay 2
Current below normal and 0897-06 Glow Plug Start
Aid Relay 2 Current above normal are displayed,
contact t
he Global Technical Support Center.
Use this procedure if another test procedure has
directe
dyouhere.
Use this procedure for the following diagnostic codes:
•
2246-05 Glow Plug Start Aid Relay Current below
normal
•
2246-06 Glow Plug Start Aid Relay Current above
normal
The following background information is related
to this procedure:
The starting aid is used to improve the engine starting
when the engine is cold. With the keyswitch in the
ON pos
ition, the engine Electronic Control Module
(ECM) will monitor the coolant temperature and the
intake manifold air temperature in order to determine
if th
e glow plugs are required to be switched ON. If
the glow plugs are required, then the ECM activates
the starting aid relay for a controlled time period.
Whil
e the glow plug start aid relay is energized the
glow plug start aid relay will switch power to the glow
plugs. If a “Wait To Start” lamp is installed, the lamp
wil
l be illuminated in order to indicate the “Wait To
Start” period.
Ele
ctronic Service Tool
The electronic service tool includes the test “Glow
Pl
ug Start Aid Override Test”. The “Glow Plug Start
Aid Override Test” will assist the analysis of the cold
starting aid.
Overview of the Glow Plug Start Aid Override Test
This glow plug start aid override test switches on the
cold starting a
id when the engine is not running. The
glow plug start aid override test aids the analysis of
the circuit for the glow plug start aid relay.
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