Test Step 2. Check for Normal Operation of the Wait to Start Lamp

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TM 9-2320-312-24-2

Troubleshooting Section

No Proceed to Test Step 3.

B. Perform a 45 N (10 lb) pull test on each of the

wires in the ECM connector that are associated

Test Step 3. Test the Circuit for the Wait

with the wait to start lamp.

to Start Lamp

Refer to Illustration 190.

C. Check the ECM connector (allen head screw) for

the proper torque of 6.0 Nm (55 lb in).

D. Check the harness and wiring for abrasion and

pinch points from the battery to the ECM.

Expected Result:

All connectors, pins and sockets should be

completely coupled and/or inserted and the harness

and wiring should be free of corrosion, abrasion

or pinch points.

Results:

OK Proceed to Test Step 2.

Not OK

Repair: Repair the connectors or wiring and/or

g00770210

Illustration 191

replace the connectors or wiring. Ensure that all

Vehicle harness connector P1

of the seals are properly in place and ensure that

the connectors are completely coupled.

A. Disconnect ECM vehicle harness connector

J1/P1.

STOP.

B. Fabricate a jumper wire 100 mm (4 inch) long.

Test Step 2. Check for Normal Operation

Crimp a Deutsch pin to both ends of the wire.

of the Wait to Start Lamp.

C. Insert the jumper into terminal 31 of connector

A. Connect ET. Access the configuration screen

P1.

and ensure that the "Output #9" parameter

is programmed to "Wait To Start Lamp". For

D. Connect the other end of the jumper wire to

OCT01 Software, ensure that "Wait to Start

terminal 65 (-battery) of connector P1.

Lamp" is programmed to "J1/P1:31". Also, "Fast

Idle Enabled Lamp" must be programmed to

E. Turn the ignition key switch to the ON position.

"J1/P1:21".

F. While the lamp is being watched, insert the

B. Turn the ignition key switch to the OFF position

jumper wire and remove the jumper wire.

for ten seconds. Turn the ignition key switch to

the ON position.

Refer to Illustration 191.

C. The wait to start lamp should illuminate for

Expected Result:

approximately two seconds when the key switch

is turned on. If conditions require the air inlet

Result 1 The wait to start lamp turns on while the

heater to turn on, the wait to start lamp should

jumper is connected to both sockets. Also, the wait

remain illuminated until the air inlet heater turns

to start lamp turns off when the jumper is removed

off or the engine is started.

from one of the sockets.

Expected Result:

Result 2 The lamp does not turn on while the

jumper is connected to both sockets.

The wait to start lamp turns on and the wait to start

lamp turns off per the above description.

Result 3 The lamp will stay on while the ECM

vehicle harness connector is disconnected.

Results:

Yes The wait to start lamp appears to operating

correctly at this time. STOP.