2004 ISUZU TF SERIES Workshop Manual

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ISUZU TF SERIES 2004  Workshop Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–121
7 Repair the open or short to ground circuit between the
ECM and MAP sensor 
Was the problem solved?
—Verify repair Go to Step 11
8 Using the DVM and check

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ISUZU TF SERIES 2004  Workshop Manual 6E–122 ENGINE DRIVEABILITY AND EMISSIONS
12 Replace the ECM. 
Is the action complete? 
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in

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ISUZU TF SERIES 2004  Workshop Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–123
DIAGNOSTIC TROUBLE CODE (DTC) P0108 MANIFOLD ABSOLUTE 
PRESSURE CIRCUIT HIGH INPUT
Condition for setting the DTC and action taken when the DTC sets
Circuit D

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ISUZU TF SERIES 2004  Workshop Manual 6E–124 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Aids
Check for the following conditions:
Poor connection at ECM - Inspect harness
connectors for backed-out terminals, improper
mating, broken lo

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ISUZU TF SERIES 2004  Workshop Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–125
6 Using the DVM and check the MAP sensor power
supply circuit.
1.  Ignition “On”, engine “Off”. 
2. Disconnect the MAP sensor connector. 
3. Check th

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ISUZU TF SERIES 2004  Workshop Manual 6E–126 ENGINE DRIVEABILITY AND EMISSIONS
10 Using the DVM and check the MAP sensor ground
circuit.
Breaker box is available: 
1. Ignition “Off”, engine “Off”. 
2. Install the breaker box  as

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ISUZU TF SERIES 2004  Workshop Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–127
DIAGNOSTIC TROUBLE CODE (DTC) P0112 INTAKE AIR TEMPERATURE 
SENSOR LOW INPUT
Condition for setting the DTC and action taken when the DTC sets
Circuit Descrip

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ISUZU TF SERIES 2004  Workshop Manual 6E–128 ENGINE DRIVEABILITY AND EMISSIONS
circuit. If the harness appears to be OK, observe the
IAT display on the Tech 2 while moving connectors
and wiring harnesses related to the IAT sensor. Achan