Isuzu KB P190. Manual — part 1499

11B-42 ANTITHEFT SYSTEM

DTC 16 Door Lock Actuators Short Circuit to Ground

Step Action Value

(s)

Yes

No

1

Was the Antitheft System Check performed?

— Go

to

Step 2

Go to antitheft

System Check

2

Check the door lock actuators circuit.

1. Key position is “OFF”.

2. Disconnect the antitheft control unit (ACU).

3. Check the door lock actuator circuit for short to

ground.

If the problem found, repair as necessary.

Was a problem found?

—

Verify repair

Go to Step 3

3

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 16 stored?

—

Go to Step 4 Verify

repair

4

Replace the antitheft control unit (ACU).

IMPORTANT: The replacement ACU must be
programmed the security data by the Tech-2.

Was the action complete?

—

Verify repair

—

ANTITHEFT SYSTEM 11B-43

DTC 20 Broken wire to door lock actuators

Step Action Value

(s)

Yes

No

1

Was 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.

Was a problem found?

—

Go to Step 4 Go

to

Step 5

4

Repair or replace the antitheft/door lock motor circuit.

Was 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.

Was the action complete?

—

Verify repair

—

11B-44 ANTITHEFT SYSTEM

DTC 21 Remote Key 1 With Random Code Out Of Capture Range

Step Action Value

(s)

Yes

No

1

Was 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).
Was 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”)

Was 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.

Was 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.

Was the action complete?

—

Verify repair

—

ANTITHEFT SYSTEM 11B-45

DTC 22 Remote Key 2 With Random Code Out Of Capture Range

Step Action Value

(s)

Yes

No

1

Was 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).
Was 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")

Was 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.

Was 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.

Was the action complete?

—

Verify repair

—