2007 ISUZU KB P190 key

ANTITHEFT SYSTEM 11B-43
DTC 20 Broken wire to door lock actuators
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 20 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the door lock actuator circuit.
1. Key position is “OFF”.
2. Disconnect the antitheft control unit (ACU).
3. Disconnect the door lock motor.
4. Check the antitheft/door lock motor line circuit for an open, short to ground.
Also, check the ignition feed circuits for an open or short to ground and the ACU ground circuit for
an open.
W as a problem found? — Go to Step 4 Go to Step 5
4 Repair or replace the antitheft/door lock motor circuit.
W as the action complete? — Verify repair —
5 Replace the antitheft control unit (ACU).
IMPORTANT: The replacement ACU must be
programmed the security data by the tech2.
W as the action complete? — Verify repair —


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TO MODEL INDEX
ISUZU KB P190 2007

11B-44 ANTITHEFT SYSTEM
DTC 21 Remote Key 1 With Random Code Out Of Capture Range
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft programming functions to the peculiar key with the Tech-2
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the antitheft programming functions.
• Transmitter (Remote Key).
(Refer to “Important information on Programming”)
W as the action complete? — Go to Step 5 —
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 21 stored? — Go to Step 6 Verify repair
6 Replace the transmitter (Remote Key).
IMPORTANT: The replacement transmitter (Remote
Key) must be programmed the security data by Tech-
2.
W as the action complete? — Go to Step 7 —
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 21 stored? — Go to Step 8 Verify repair
8 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-45
DTC 22 Remote Key 2 With Random Code Out Of Capture Range
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft programming functions to the peculiar key with the Tech-2
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the antitheft programming functions.
• Transmitter (Remote Key).
(Refer to “Important information on Programming")
W as the action complete? — Go to Step 5 —
5 Recheck the DTC.
1. Key position is “OFF“ and keep the position for more than 30 seconds.
2. Key position is “ON“.
3. Check the DTC on the Tech-2.
Is DTC 22 stored? — Go to Step 6 Verify repair
6 Replace the transmitter (Remote Key).
IMPORTANT: The replacement Transmitter (Remote
Key) must be programmed the security data by Tech-
2.
W as the action complete? — Go to Step 7 —
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON“.
3. Check the DTC on the Tech-2.
Is DTC 22 stored? — Go to Step 8 Verify repair
8 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-46 ANTITHEFT SYSTEM
DTC 23 Remote Key 3 With Random Code Out Of Capture Range
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Check the key. Is a key peculiar to a vehicle?
— Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft programming functions to the peculiar key with the Tech-2
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the antitheft programming functions.
• Transmitter (Remote Key).
(Refer to “Important information on Programming”)
W as the action complete? — Go to Step 5 —
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 23 stored? — Go to Step 6 Verify repair
6 Replace the Transmitter (Remote Key).
IMPORTANT: The replacement Transmitter (Remote
Key) must be programmed the security data by Tech-
2.
W as the action complete? — Go to Step 7 —
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 23 stored? — Go to Step 8 Verify repair
8 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-47
DTC 24 Remote Key 4 With Random Code Out Of Capture Range
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft programming functions to the peculiar key with the Tech-2
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the antitheft programming functions.
• Transmitter (Remote Key).
(Refer to “Important information on Programming”)
W as the action complete? — Go to Step 5 —
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 24 stored? — Go to Step 6 Verify repair
6 Replace the transmitter (Remote Key).
IMPORTANT: The replacement transmitter (Remote
Key) must be programmed the security data by Tech-
2.
W as the action complete? — Go to Step 7 —
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 24 stored? — Go to Step 8 Verify repair
8 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-48 ANTITHEFT SYSTEM
DTC 25 Remote Key 5 With Random Code Out Of Capture Range
Step Action Value (s) Yes No
1 W as the Antitheft System Check performed?
— Go to Step 2 Go to
antitheft
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft programming functions to the peculiar key with the Tech-2
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the antitheft programming functions.
• Transmitter (Remote Key).
(Refer to “Important information on Programming”)
W as the action complete? — Go to Step 5 —
5 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 25 stored? — Go to Step 6 Verify repair
6 Replace the transmitter (Remote Key).
IMPORTANT: The replacement transmitter (Remote
Key) must be programmed the security data by Tech-
2.
W as the action complete? — Go to Step 7 —
7 Recheck the DTC.
1. Key position is “OFF” and keep the position for more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on the Tech-2.
Is DTC 25 stored? — Go to Step 8 Verify repair
8 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-49
DTC 28 Input Immobilizer short circuit to ground
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 28 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the driver door locking motor function.
line circuit.
1. Key position is “OFF”.
2. Install the Tech-2 on vehicle.
3. Key position is “ON”.
4. Check the antitheft/Immobilizer communication line circuit for short to voltage, short to ground.
Also, check the ICU and ACU ignition feed circuits for an open or short to ground and the ICU and
ACU ground circuit for an open.
W as a problem found? — Go to Step 4 Go to Step 5
4 Repair or replace the antitheft/Immobilizer
communication line circuit.
W as the action complete? — Verify repair —
5 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-50 ANTITHEFT SYSTEM
DTC 29 Broken Wire To Immobilizer
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 scan tool on vehicle.
3. Key position is “ON”.
4. Check the DTC on the Tech-2.
Is DTC 29 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the antitheft/immobilizer communication line circuit.
1. Key position is “OFF”.
2. Disconnect the antitheft control unit (ACU).
3. Disconnect the immobilizer control unit (ICU).
4. Check the antitheft/Immobilizer communication line circuit for an open, short to ground.
Also, check the ICU and ACU ignition feed circuits for
an open or short to ground and the ICU and ACU
ground circuit for an open.
W as a problem found? — Go to Step 4 Go to Step 5
4 Repair or replace the antitheft/Immobilizer
communication line circuit.
W as the action complete? — Verify repair —
5 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