2007 ISUZU KB P190 Harness

7A2-54 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Step Action Value(s) YES NO
6 Measure the resistance of wire by the 5-8840-0285-0
DMM.
1. Turn “OFF” the ignition.
2. Disconnect the TCM connector.
3. Install a fused jumper wire between terminals E83-
1 and E83-2 on the transmission harness.

Does DMM indicate specified value? Less than
1
Ω
Go to Step 8 Go to Step 7
7 An open circuit between TCM from oil temperature
sensor.
Repair the harness.

Is the action complete ? — Go to
Step 9 —
8 Replace the TCM
Important: The replacement TCM must be
programmed. (Refer to SPS for procedure.)

Is the action complete? — Go to
Step 9 —
9 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with a scan tool.
3. Turn “OFF” the ignition.
4. Start the engine.
5. Operate the vehicle within the Conditions For Running the DTC. You may also operate the
vehicle within the conditions that you observed
from the Freeze Frame/ Failure Records.

Did the DTC fail this ignition? — Go to
Step 2 Go to Step 10
10 Observe the stored information, Capture Info with a
scan tool.

Are there any DTCs that you have not diagnosed? — Go
to
Diagnostic
Trouble Code (DTC) List Verify repair


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

7A2-56 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

(2) Select position switches is not detecting failure o
r
not deciding failure.
(3) Output revolution sensor is not detecting failure o
r
not deciding failure.
(4) Output revolution is more than 600rpm.
(5) If output signal pulse count is more than 9 ×500,
any pulse is not detected from input revolution
sensor.
(6)
Any pulse is not detected at 2nd from input
revolution sensor after condition (9) is met.
(7) Shift solenoid S1 and Shift solenoid S2 are not detecting electric failure or not deciding electric
failure.
(8) Shift solenoid S1 and Shift solenoid S2 are not deciding functional failure.
If the following conditions are not met, keep the
failure detection counter.
(9) 3.5 seconds or more passed after the gear change signal output.
(10) Not 4th gear.
Action Taken When The DTC Sets
• No L-up.
• No line pressure reduction control at gear shift.
• No torque reduction control.
• No slope control
• No output revolution sensor failure detection.
• Cancel input revolution condition of the “Condition For Running The DTC” of system voltage erro
r
detection.
• No shift solenoid failure detection.
• No L-up solenoid failure detection.
• DTC stored.
• Check Trans "ON".
• MIL request "ON". (EURO 4 only)
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.
• W hen diagnosing for a possible intermittent short o
r
open condition, move the wiring harness while
observing test equipment for a change.
• Check input speed sensor for proper mounting and adjustment.

Circuit/System Testing DTC P0717

Step Action Value(s) YES NO
1
W as the On-Board Diagnostic (OBD) System check
performed? — Go to
Step 2 Go to OBD
system check
2 1. Install a scan tool.
2. Turn on the ignition.
3. Review and record scan tool data.
4. Operate the vehicle within scan tool data.

Does a scan tool indicate DTC P0717? — Go to
Step 3 Refer to
Diagnostic Aids

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ISUZU KB P190 2007

TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-57

Step Action Value(s) YES NO
3 Measure voltage of the input revolution sensor by the
5-8840-0285-0 DMM.
1. Turn “ON” the ignition.
2. Engine run.
3. Disconnect the input revolution sensor connector.
4. Measure the voltage between terminals to the input
revolution sensor harness connector E108-1 and
E108-2.

Does DMM indicate specified value? About 3V Go to
Step 6 Go to Step 4
4 Measure the resistance of wire by the 5-8840-0285-0
DMM.
1. Turn “OFF” the ignition.
2. Disconnect the TCM connector.
3. Connect the input revolution sensor connector.
4. Measure the resistance between the TCM
connector terminal C95-6 and C95-16.

Does DMM indicate specified value? 560∼680Ω
(20 °C/68 °F) Go to
Step 7 Go to Step 5
5 Measure the resistance of input revolution sensor by
the 5-8840-0285-0 DMM.
1. Turn “OFF” the ignition.
2. Disconnect the input revolution sensor connector.
3. Measure the resistance between terminals of input
revolution sensor side connector, E108-1 and
E108-2.

Does DMM indicate specified value? 560∼680Ω
(20 °C/68 °F) Go to
Step 8 Go to Step 6
6 Replace the input revolution sensor.

Is the action complete? — Go to
Step 9 —
7 Replace the TCM.
Important: The replacement TCM must be
programmed. (Refer to SPS for procedure.)

Is the action complete? — Go to
Step 9 —
8 Check the wire between terminal C95-6 and E108-2
or C95-16 and E108-1.
1. Connect the 5-8840-0285-0 DMM to the each of
the TCM connector and input revolution sensor.
If the problem found repair as necessary.

W as the problem found? — Go to
Step 9 —

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ISUZU KB P190 2007

7A2-58 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Step Action Value(s) YES NO
9 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with a scan tool.
3. Turn “OFF” the ignition.
4. Start the engine.
5. Operate the vehicle within the Conditions For Running the DTC. You may also operate the
vehicle within the conditions that you observed
from the Freeze Frame/ Failure Records.

Did the DTC fail this ignition? — Go to
Step 2 Go to Step 10
10 Observe the stored information, Capture Info with a
scan tool.

Are there any DTCs that you have not diagnosed? — Go
to
Diagnostic
Trouble Code (DTC) List Verify repair


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

7A2-60 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

(2) Select position switches is not detecting failure o
r
not deciding failure.
(3) Input revolution sensor is not detecting failure o
r
not deciding failure.
(4) Output revolution calculated by input revolution is more than 300rpm.
(5) If input revolution signal pulse count is more than 13 ×500, any pulse is not detected from output
revolution sensor.
Action Taken When The DTC Sets
• The TCM uses input speed sensor as a vehicle
speed.
• No squat control.
• No torque reduction control.
• No line pressure control.
• No use 4th gear.
• No lock-up control.
• No reverse lock out control.
• No slope control.
• Control gear change by calculating vehicle speed from input revolution sensor.
• No coast control.
• No input revolution sensor failure detection.
• Keep oil temperature sensor open failure detection accumulated timer.
• No select position switch (OPEN) failure decision.
• No T/F Hi-Low SW failure detection.
• No shift solenoid functional failure detection.
• No L-up solenoid functional failure detection.
• No lockup “OFF” control at fuel cut.
• Check Trans “ON”.
• DTC stored.
• MIL request “ON”. (EURO 4 only)
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.
• W hen diagnosing for a possible intermittent short o
r
open condition, move the wiring harness while
observing test equipment for a change.
• Check output revolution sensor for proper mounting and adjustment.

Circuit/System Testing DTC P0722

Step Action Value(s) YES NO
1
W as the On-Board Diagnostic (OBD) System check
performed ? — Go to
Step 2 Go to OBD
system check
2 1. Install a scan tool.
2. Turn on the ignition.
3. Review and record scan tool data.
4. Operate the vehicle within scan tool data.

Does a scan tool indicate DTC P0722? — Go to
Step 3 Refer to
Diagnostic Aids

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TO MODEL INDEX
ISUZU KB P190 2007

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

Step Action Value(s) YES NO
9 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with a scan tool.
3. Turn “OFF” the ignition.
4. Start the engine.
5. Operate the vehicle within the Conditions For Running the DTC. You may also operate the
vehicle within the conditions that you observed
from the Freeze Frame/ Failure Records.

Did the DTC fail this ignition? — Go to
Step 2 Go to Step 10
10 Observe the stored information, Capture Info with a
scan tool.

Are there any DTCs that you have not diagnosed? — Go
to
Diagnostic
Trouble Code (DTC) List Verify repair


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

7A2-64 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

(2) Oil temperature is more than 20 °C (68 °F), and
water temperature signal is more than 70 °C
(158 °F).
(3) 20 seconds or more passed after D position is detected.
(4) Oil temperature sensor is not deciding failure.
(5) Engine coolant temperature sensor is not detecting failure or not deciding failure.
(6) The engine revolution is more than 600 rpm.
(7) Engine revolution sensor is not detecting failure o
r
not deciding failure.
(8) T/F condition is high.
(9) T/F Hi-Low SW is not detecting failure or not deciding failure.
(10) Output revolution sensor is not detecting failure o
r
not deciding failure.
(11) S1 solenoid is not detecting failure or not deciding
failure. (Electronic failure)
(12) S2 solenoid is not detecting failure or not deciding
failure. (Electronic failure)
(13) L-up solenoid is not detecting failure or not
deciding failure. (Electronic failure)
(14) Selector position switch is not detecting failure o
r
not deciding failure.
(15) DTC U2104 is not detecting failure or not deciding
failure.
(16) DTC U2105 is not detecting failure or not deciding
failure.
(17) Input revolution sensor is not deciding failure.
(18) Throttle signal is not detecting failure or not
deciding failure.
(19) Not emergency mode.
(20)Engine torque signal is not detecting failure or not deciding failure.
(21) Pressure control solenoid is not detecting failure
not deciding failure.
(22) All of the following conditions are met.
• Device Control is not operating.
• Disable Normal Communication Service is receiving enable.
• DTC Clear is not operating.
Condition For Setting The DTC
The TCM detects following conditions are met for 4
seconds continuously.
• 2 seconds passed after gear change output and L-up “ON”/”OFF” output.
• T/C revolution difference more than 150 rpm for 4.5 seconds continuously.
• 4th gear lock-up “ON”.
• The throttle position is more than 20% and less than 100%.
• The vehicle speed is more than 5 km/h (3 mph) and less than 100 km/h (62 mph).
Action Taken When The DTC Sets
• Check Trans “ON”.
• DTC stored.
• MIL request “ON” (EURO 4 only).
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.
• W hen diagnosing for a possible intermittent short o
r
open condition, move the wiring harness while
observing test equipment for a change.


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

7A2-66 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Step Action Value(s) YES NO
8 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with a scan tool.
3. Turn “OFF” the ignition.
4. Start the engine.
5. Operate the vehicle within the Conditions For Running the DTC. You may also operate the
vehicle within the conditions that you observed
from the Freeze Frame/ Failure Records.

Did the DTC fail this ignition? — Go to
Step 2 Go to Step 9
9 Observe the stored information, Capture Info with a
scan tool.

Are there any DTCs that you have not diagnosed? — Go
to
Diagnostic
Trouble Code (DTC) List Verify repair

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007