2007 ISUZU KB P190 Circuit

ANTITHEFT SYSTEM 11B-53
DTC 36 Broken Wire To Driver Door
Step Action Value (s) Yes No
1 W as the Antitheft System Check" performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 36 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the driver door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock data with the Tech-2.
5. Turn ON by driver door lock.
Does the Tech-2 display Closed? — Go to Step 4 Go to Step 5
4
1. Key position is “ON”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by driver door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the driver door lock circuit for an open,
short to ground, or short to voltage.
Also, check the motor connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the driver door lock.
2. Check the DTC on the Tech-2.
Is DTC 36 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


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TO MODEL INDEX
ISUZU KB P190 2007

11B-54 ANTITHEFT SYSTEM
DTC 37 Broken Wire To Passenger Door
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 37 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the passenger door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock data with the Tech-2.
5. Turn ON by passenger door lock.
Does the Tech-2 display Closed ? — Go to Step 4 Go to Step 5
4
1. Key position is “ON”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by passenger door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the passenger door lock circuit for an open,
short to ground, or short to voltage.
Also, check the motor connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the passenger door lock.
2. Check the DTC on the Tech-2.
Is DTC 37 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


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TO MODEL INDEX
ISUZU KB P190 2007

ANTITHEFT SYSTEM 11B-55
DTC 41 Driver Door Lock Switch Unlock Defect
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 41 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the driver door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock switch data with the Tech-2.
5. Turn ON by driver door lock.
Does the Tech-2 display Closed? — Go to Step 4 Go to Step 5
4
1. Key position is “OFF”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by driver door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the driver door lock switch circuit for an
open, short to ground, or short to voltage.
Also, check the door lock connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the driver door lock switch.
2. Check the DTC on the Tech-2.
Is DTC 41 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

11B-56 ANTITHEFT SYSTEM
DTC 42 Driver Door Lock Switch lock Defect
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 42 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the driver door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock switch data with the Tech-2.
5. Turn ON by driver door lock.
Does the Tech-2 display Closed? — Go to Step 4 Go to Step 5
4
1. Key position is “OFF”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by driver door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the driver door lock switch circuit for an
open, short to ground, or short to voltage.
Also, check the door lock connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the driver door lock switch.
2. Check the DTC on the Tech-2.
Is DTC 42 stored? — Go to
Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


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TO MODEL INDEX
ISUZU KB P190 2007

ANTITHEFT SYSTEM 11B-57
DTC 43 Driver Door Lock Switch Super lock Defect
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 43 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the driver door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock switch data with the Tech-2.
5. Turn ON by driver door lock.
Does the Tech-2 display Closed? — Go to Step 4 Go to Step 5
4
1. Key position is “OFF”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by driver door lock.
Does the Tech-2 display Open? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the driver door lock switch circuit for an
open, short to ground, or short to voltage.
Also, check the door lock connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the driver door lock switch.
2. Check the DTC on the Tech-2.
Is DTC 43 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

11B-58 ANTITHEFT SYSTEM
DTC 44 Passenger Door Lock Switch lock Defect
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 44 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the passenger door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock switch data with the Tech-2.
5. Turn ON by passenger door lock.
Does the Tech-2 display Closed? — Go to Step 4 Go to Step 5
4
1. Key position is “OFF”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by passenger door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids ,
and then go to step 5 Go to Step 5
5
1. Check the passenger door lock switch circuit for
an open, short to ground, or short to voltage.
Also, check the door lock connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the passenger door lock switch.
2. Check the DTC on the Tech-2.
Is DTC 44 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ANTITHEFT SYSTEM 11B-59
DTC 45 Passenger Door Lock Switch Unlock Defect
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 44 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the passenger door lock function.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “OFF”.
4. Observe to display door lock switch data with the Tech-2.
5. Turn ON by passenger door lock.
Does the Tech-2 display Closed ? — Go to Step 4 Go to Step 5
4
1. Key position is “OFF”.
2. Observe to display door lock data with the Tech-2.
3. Turn OFF by passenger door lock.
Does the Tech-2 display Open ? — Refer to
Diagnostic Aids,
and then go to step 5 Go to Step 5
5
1. Check the passenger door lock switch circuit for
an open, short to ground, or short to voltage.
Also, check the door lock connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 6
6
1. Repair or replace the passenger door lock switch.
2. Check the DTC on the Tech-2.
Is DTC 45 stored? — Go to Step 7 Verify repair
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

11B-60 ANTITHEFT SYSTEM
DTC 47 Battery Voltage For Door Lock Actuators Is Missing
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Recheck the DTC.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 47 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antilock system voltage.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Observe to display system voltage data with the Tech-2.
Is the voltage near the specified value ? — Go to Step 5 Go to Step 4
4
1. Key position is “OFF”.
2. Check the battery voltage.
3. If a problem found, repair as necessary. (Chage battery)
W as the problem found? — Verify repair Refer to
Diagnostic Aids
5 Check the door lock motor output voltage.
1. Key position is “OFF”.
2. Connect a digital volt meter to measure voltage.
between ACU terminal 7 and body ground.
3. Key position is “ON”.
4. Observe to display voltage with the DVM.
5. Door lock ON.
Is the voltage near the specified value ? — Go to Step 6 Go to Step 7
6
1. Check the door lock motor circuit for an open,
short to ground, or short to voltage.
Also, check the door lock motor connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair —
7 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.
W as the action complete? — Verify repair —


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007