2004 ISUZU TF SERIES Workshop Manual

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Page 3737 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L) 7A2-57

Step Action Value(s) YES NO
4

1. Key "OFF".

2. Disconnect the TCM connector (C-94).
3. Key "ON".

4. Measure the voltage bet

Page 3738 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A2-58 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

DTC P0748 (FLASHING CODE 35) Pressure Control Solenoid Electrical

RTW37ALF000601
Circuit Description
The pressure control solen

Page 3739 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L) 7A2-59

DTC stored.
Conditions For Clearing The DTC

The DTC can be cleared from the TCM history by
using a scan tool.
The DTC will be

Page 3740 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A2-60 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

Step Action Value(s) YES NO
4 Measure the resistance of pressure control solenoid.

1. Key “OFF".
2. Disconnect the automatic tra

Page 3741 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L) 7A2-61

DTC P0753 (FLASHING CODE 31) Shift Solenoid S1 Electrical

RTW37ALF000601

Circuit Description
The shift solenoi S1 changes the

Page 3742 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A2-62 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

Action Taken When The DTC Sets

The TCM operates shifting as following pattern.

Normal Fail S1 S2
1 3 - on
2 3 - on
3 3

7A2-62 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

Action Taken When The DTC Sets

The TCM operates shifting as following pattern.

Normal Fail S1 S2
1 3 - on
2 3 - on
3 3 - on
4 4 - off

No squat control.
No engine torque control.

No line pressure control.

No lock-up control.
No slope control.

Check Trans ON.

DTC stored.

No detect DTC P0722

No detect DTC P0717

Conditions For Clearing The DTC

The DTC can be cleared from the TCM history by
using a scan tool.

The DTC will be cleared from history when the
vehicle has achieved 40 warm-up cycles without a
failure reported.

After more than 1 second has elapsed after the
ignition key has been turned “ON", short between
No.11 and No.4 (ground) of DLC (Data Link
Connector). Then, after 1 second, but within 6
seconds, discontinue shorting.
Diagnostic Aids

Inspect the wiring for poor electrical connection at
the TCM. Look for possible bent, backed out,
deformed or damaged terminals. Check for weak
terminal tension as well. Also check for a chafed wire
that could short to bare metal or other wiring.
Inspect for a broken wire inside the insulation.

When diagnosing for a possible intermittent short o
r
open condition, move the wiring harness while
observing test equipment for a change.

DTC P0753 (FLASHING CODE 31) Shift Solenoid S1 Electrical

Step Action Value(s) YES NO
1
Was the Powertrain On-Board Diagnostic (OBD)
System Check performed? — Go to Step 2 Go to OBD
System Check
2

1. Install the scan tool.

2. Key “ON".
3. Review and record scan tool data.

4. Operate the vehicle within scan tool data.
Does the scan tool indicate DTC P0753? — Go to Step 3 Refer to
Diagnostic Aids
3

1. Key “ON", engine run.

2. Place the selector lever in the "P" range.
3. Measure the voltage between terminal C94-16 and
terminal C94-1 on the TCM pigtail connector by
J39200 DMM.
Is the voltage specified value? 816V Go to Step 4 Go to Step 10

Page 3743 of 4264

ISUZU TF SERIES 2004 Workshop Manual TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L) 7A2-63

Step Action Value(s) YES NO
4

1. Key "OFF".

2. Disconnect the TCM connector (C-94).

3. Key "ON".
4. Measure the voltage betwe

Page 3744 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A2-64 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

DTC P0758 (FLASHING CODE 32) Shift Solenoid S2 Electrical

RTW37ALF000601

Circuit Description
The solenoid S2 changes the hydrau

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