2004 ISUZU TF SERIES Workshop Manual

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ISUZU TF SERIES 2004  Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE)  7A3-5 
 
Speed Change and Lock-Up Pattern 
If you select a speed as shown below by specifying  
respective positions of transmission shift lever, transfe
r
switch an

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ISUZU TF SERIES 2004  Workshop Manual 7A3-6  ON-VEHICLE SERVICE (AW30 –40LE) 
 
Diagnosis   
Basic Troubleshooting 
AW30 
–40LE transmission, with Transmission Control 
Module (TCM), differs from the Mechanical   – Hydraulic 
contro

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ISUZU TF SERIES 2004  Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE)  7A3-7 
 
Troubleshooting Chart 
Numbers are arranged in order of probability.      
Perform inspections starting with number one and  
working up.

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ISUZU TF SERIES 2004  Workshop Manual 7A3-8  ON-VEHICLE SERVICE (AW30 –40LE)

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ISUZU TF SERIES 2004  Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE)  7A3-9

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ISUZU TF SERIES 2004  Workshop Manual 7A3-10  ON-VEHICLE SERVICE (AW30 –40LE)

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ISUZU TF SERIES 2004  Workshop Manual ON-VEHICLE SERVICE (AW30 –40LE)  7A3-11

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ISUZU TF SERIES 2004  Workshop Manual 7A3-12  ON-VEHICLE SERVICE (AW30 –40LE) 
 
Manual Shifting Test 
NOTE:  With this test, it can be determined whether the 
trouble lies within the electrical circuit or is a mechanical
problem in the