Isuzu KB P190. Manual — part 1500

11B-46 ANTITHEFT SYSTEM

DTC 23 Remote Key 3 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 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.

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 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.

Was the action complete?

—

Verify repair

—

ANTITHEFT SYSTEM 11B-47

DTC 24 Remote Key 4 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 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.

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 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.

Was the action complete?

—

Verify repair

—

11B-48 ANTITHEFT SYSTEM

DTC 25 Remote Key 5 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 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.

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 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.

Was the action complete?

—

Verify repair

—

ANTITHEFT SYSTEM 11B-49

DTC 28 Input Immobilizer 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

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.

Was a problem found?

—

Go to Step 4 Go

to

Step 5

4

Repair or replace the antitheft/Immobilizer
communication line 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 Tech-2.

Was the action complete?

—

Verify repair

—