2007 ISUZU KB P190 check oil

7A2-24 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
TRANSMISSION DATA
Scan Tool Parameter Units Displayed Typical Data Value at Engine Idle
Operating Conditions: Engine idling/ Engine coolant temperature is between 75 to 85 °C(167 to 185 °F)/
Accelerator pedal is constant/ Neutral or Park/ Accessories OFF/ Vehicle located at sea level
Engine Coolant temperature °C/ °F 75 to 85°C (167 to 185 °F)
Engine Speed RPM 700
Vehicle Speed Km/h / MPH 0
Ignition Voltage V 13.6
Accelerator Pedal Position Signal % 0
Throttle Position % 0
Accelerator Pedal Position Signal
During Cruise Control % 0
Cruise Control
Inactive / Active Inactive
Cruise Control OD Cancel Request ON / OFF OFF
Engine W arm Up Cycle Achieved FALSE / TRUE FALSE
Transmission Shift in Progress Inactive / Active Inactive
Garage Shift Control Inactive / Active Inactive
MIL Request Command ON / OFF OFF
Transmission Check Light ON / OFF OFF
Transmission Oil Temperature Lamp ON / OFF OFF
Power Drive Lamp ON / OFF OFF
3rd Start Lamp ON / OFF OFF
Transmission Fluid Temperature
°C/ °F 70 to 80°C (158 to 176 °F)
AT Input Speed RPM 625
AT Output Speed RPM 0
Transmission Range Park / Reverse /
Neutral / Drive 4 / Drive 3 / Drive 2 / Drive 1 Park
TR Switch P
ON / OFF ON
TR Switch R ON / OFF OFF
TR Switch N ON / OFF OFF
TR Switch D ON / OFF OFF
TR Switch 3 ON / OFF OFF
TR Switch 2 ON / OFF OFF
TR Switch L ON / OFF OFF
Diagnostic Switch Open / Close Open
Brake Pedal Switch ON / OFF OFF
Power Drive Switch ON / OFF OFF
3rd Start Switch ON / OFF OFF
4 W heel Drive Low ON / OFF OFF
Shift Solenoid 1 Command ON / OFF ON
Shift Solenoid 2 Command ON / OFF OFF
TCC Solenoid Engaged / Disengaged Disengaged
Downhill Mode Inactive / Active Inactive
Active Shift Mode Normal Mode /
Power Mode /
3rd Gear Start /
Transfer 4L MODE Hot 1 / Hot 2 /
UPHILL MODE 1 /
UPHILL MODE 2 / Cruise MODE /
W arm Up MODE Normal Mode
Estimated Gear Ratio
:1 7.97 : 1

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ISUZU KB P190 2007

7A2-38 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
TCM Diagnostic Trouble Codes
The following table lists the diagnostic trouble codes supported by this vehicle application. If any DTCs not listed here
are displayed by a scan tool, the scan tool data may be faulty; notify the scan tool manufacture of any DTCs displayed
that are not included in the following table.

DTC Type
DTC No. Flash
Code DTC NAME
EURO 4Except
EURO 4
P0562 72 System Voltage Error (Low) E E
P0563 73 System Voltage Error (High) E E
P0602 63 Transmission Control Module (TCM) Programming Error E E
P0707 17 Transmission Range Sensor Circuit Open B D
P0708 17 Transmission Range Sensor Circuit Short B D
P0712 15 Transmission Oil Temperature Circuit Short
B D
P0713 16 Transmission Oil Temperature Circuit Open
B D
P0717 14 Input Speed Sensor Signal Error
B D
P0722 11 Output Speed Sensor Signal Error
B D
P0741 43 Torque Converter Clutch Stuck “OFF”
B F
P0742 53 Torque Converter Clutch Stuck “ON”
B F
P0746 45 Pressure Control Solenoid F/B Stuck
B D
P0751 41 Shift Solenoid S1 Stuck “OFF” B D
P0752 51 Shift Solenoid S1 Stuck “ON” B F
P0756 42 Shift Solenoid S2 Stuck “OFF” B F
P0757 52 Shift Solenoid S2 Stuck “ON” B F
P0962 35 Pressure Control Solenoid Circuit Open or GND Short B F
P0963 35 Pressure Control Solenoid Circuit Ignition Short B D
P0973 31 Shift Solenoid S1 Circuit GND Short B D
P0974 31 Shift Solenoid S1 Circuit Open or Ignition Short B D
P0976 32 Shift Solenoid S2 Circuit GND Short B D
P0977 32 Shift Solenoid S2 Circuit Open or Ignition Short B D
P1790 61 Transmission Control Module (TCM) ROM Checksum Error B D
P1791 62 Transmission Control Module (TCM) RAM Error B D
P2769 33 Torque Converter Clutch Circuit GND Short B D
P2770 33 Torque Converter Clutch Circuit Open or Ignition Short B D
P2773 75 Transfer 4L Switch Circuit GND Short B D
P2774 75 Transfer 4L Switch Circuit Open or Ignition Short B D
U2104 65 CAN BUS OFF
A C
U2105 67 Lost of Communication with ECM A C


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ISUZU KB P190 2007

7A2-46 TRANSMISSION CONTROL SYSTEM (AW30–40LE)


(2) Not emergency mode.
(3) 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
DTC P0707
All of the following conditions are met for 30 seconds or
more continuously.
• All of the switches are “OFF”.
• Output revolution is more than 30 km/h (19 mph).
• Output revolution sensor is not detecting failure o
r
not deciding failure.
• The engine revolution is more than 1500 rpm.
DTC P0708
The following condition is met at 10 seconds
continuously.
• 2 switches or more are “ON” at the same time.
Action Taken When The DTC Sets
• No 3rd start mode.
• No slope control.
• No coast control.
• No output revolution sensor failure detection.
• No input revolution sensor failure detection.
• Keep oil temperature sensor OPEN failure detection accumulated timer.
• No T/F HI-Low SW failure detection.
• No shift solenoid functional failure detection.
• No L-up solenoid functional failure detection.
• No engine torque reduction at stall.
• Regard as D position. (DTC P0707)
• There is a priority in order of D, 3, 2, L, R, N, and P.
(DTC P0708)
• 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 neutral start switch for proper mounting and adjustment. (Refer to section 7A4 Components (1)
neutral start switch)



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ISUZU KB P190 2007

7A2-50 TRANSMISSION CONTROL SYSTEM (AW30–40LE)

Action Taken When The DTC Sets
• Control at A/T oil temperature 80 °C (176 °F).
• No squat control.
• No slope control.
• No 3rd start mode.
• No line pressure reduction at gear change.
• No coast control.
• No line pressure reduction control at garage.
• No shift solenoid functional failure detection.
• No L-up solenoid functional failure detection.
• 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 oil temperature sensor for proper mounting and adjustment.

Circuit/System Testing DTC P0712

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 Perform the transmission fluid checking procedure. Refer to checking Transmission Fluid level and
Condition in Automatic Transmission 7A section.

W as the fluid checking procedure performed? — Go to
Step 3 Refer to
Checking
Transmission
Fluid level and Condition in Automatic
Transmission
(AW 30-40LE) section
3 1. Lift the driving wheels.
2. Start the engine and place the select lever in D
position.
3. W ait for 5 minutes.

Does a scan tool indicate DTC P0712? — Go to
Step 4 Refer to
Diagnostic Aids

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ISUZU KB P190 2007

TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-53

• No L-up solenoid functional failure detection.
• 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 oil temperature sensor for proper mounting
and adjustment.

Circuit/System Testing DTC P0713

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 Perform the transmission fluid checking procedure. Refer to Checking Transmission Fluid Level and
condition Automatic Transmission 7A section.

W as the fluid checking procedure performed? — Go to
Step 3 Refer to
checking
Transmission
Fluid Level and Condition
Automatic
Transmission
(AW 30-40LE) section
3 1. Lift the driving wheels.
2. Start the engine and place the select lever in D
position.
3. W ait for 15 minutes.

Does a scan tool indicate DTC P0713? — Go to
Step 4 Refer to
Diagnostic Aids
4 Observe the voltage of the oil temperature sensor on the Tech 2 data.
1. Turn “OFF” the ignition.
2. Disconnect the oil temperature sensor connector
E-83
3. Install a fused jumper wire from terminal E83-2 to E83-1 on the transmission harness.
4. Turn “ON” the ignition.

Does a scan tool indicate specified value? About 0V Go to
Step 5 Go to Step 6
5 Replace the transmission fluid temperature sensor.

If the action complete? — Go to
Step 9 —

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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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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.


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ISUZU KB P190 2007

7A2-68 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 following conditions are detected two times or more
between ignition “ON” and ignition “OFF”.
The TCM detects following conditions are met for 1
second continuously.
• 2 second passed after gear change output and L-up “ON”/”OFF” output.
• T/C revolution difference more than 100 rpm for 1 second continuously.
• 3rd gear lock-up “OFF”.
Action Taken When The DTC Sets
• No squat control. (For preventing engine stall)
• Fix 1st gear to prevent engine stall when vehicle speed is and below 10 km/h (6 mph). (Cancel at 15
km/h {9 mph})
• 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