Test Step 1. Verify All Active Diagnostic Codes

261

TM 9-2320-312-24-2

Troubleshooting Section

g00724478

Illustration 95

Schematic for engine temperature sensors

Test Step 1. Verify All Active Diagnostic

Codes.

A. Connect an electronic service tool to the cab

data link connector.

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

Wait at least 15 seconds for activation of the

diagnostic codes.

C. Verify if any of the following diagnostic codes

are active:

105-03 Inlet Manifold Air Temp Sensor Open

Circuit (38)

105-04 Inlet Manifold Air Temp Sensor Short

Circuit (38)

110-03 Coolant Temp Sensor Open Circuit (27)

110-04 Coolant Temp Sensor Short Circuit (27)

Expected Result:

One or more of the preceding diagnostic codes

are active.

Results:

Yes Proceed to Test Step 2.

Repair: If the preceding codes are logged but

not active and the engine is not running properly,

refer to Troubleshooting, "Troubleshooting without

a Diagnostic Code". If the engine is running

properly at this time, an intermittent condition

may be causing the logged codes. Refer to

Troubleshooting, "Electrical Connectors - Inspect".

STOP.