Isuzu KB P190. Manual — part 1498

11B-38 ANTITHEFT SYSTEM

Antitheft System Check

Step Action Value

(s)

Yes

No

1

1. Key position is “ACC”, shut all doors and bonnet.

2. Observe the antitheft lamp.

Note: When a key switch is “ACC”, antitheft lamp will
turn on and a antitheft lamp (LED) will be flashing
after 10 seconds.

Is the antitheft lamp "ON” or flashing?

—

Go to Step 2

Go to

“No antitheft

lamp”

2

1. Key position is “ON”, engine “OFF”.

2. Observe the antitheft lamp.

3. Key position is turned “ACC”.

4. Check the antitheft lamp will be turned flashing

and lamp will be turned ACC after 10 seconds.

Is the antitheft lamp flashing?

—

Go to

DTC table

Go to Step 3

3

1. Key position is “OFF”.

2. Install the Tech-2.

3. Key position is “ON” or “OFF”.

4. Attempt to display antitheft data with the Tech-2.
Does the Tech-2 display antitheft data?

—

Go to Step 9 Go

to

Step 4

4

1. Key position is “OFF”, disconnect the antitheft

control unit (ACU).

2. Check the DLC (Data Link Connector) circuit for

an open, short to ground, or short to voltage.

Also, check the DLC ignition feed circuit for an open
or short to ground and the DLC ground circuit for an
open.

Was a problem found?

—

Go to Step 5 Go

to

Step 6

5

Repair or replace the DLC (Data Link Connector)
circuit.

Was the action complete?

—

Go to Step 3 —

6

1 Check the ACU ground circuit for an open, or

short to voltage. Also, check the ACU ignition feed

circuit for an open or short to ground and the ACU

ground circuit for an open.

2 If a problem is found, repair as necessary.
Was the problem found?

—

Verify repair

Go to Step 7

7

Replace the antitheft control unit (ACU).

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

Was the action complete?

— Go

to

Step 8 —

8

Select “Display DTCs” with the Tech-2.

Are any DTCs stored?

—

Go to applicable

DTC table

—

9

1 Observe the antitheft data list on Tech-2.

2 If a problem is found, repair as necessary.
Was the problem found?

—

System OK

Go to

applicable

section

ANTITHEFT SYSTEM 11B-39

No Antitheft Lamp

Step Action Value

(s)

Yes

No

1

Check the fuse for the antitheft power feed circuit.
(10A)

If a problem found, repair as necessary.

Was the problem found?

Is the action complete?

—

Verify repair

Go to Step 2

2

1. Check the ACU ground circuit for an open, or

short to voltage. Also, check the ACU ignition feed

circuit for an open or short to ground and the ACU

ground circuit for an open.

2. If a problem is found, repair as necessary.
Was the problem found?

—

Verify repair

Go to Step 3

3

1. Check the antitheft lamp LED circuit for an open,

or short to voltage.

2. If a problem is found, repair as necessary.
Was the problem found?

—

Verify repair

Go to Step 4

4

1. Key position is “OFF”.

2. Install the Tech-2.

3. Key position is “ACC” or “OFF”.

4. Observe to display lamp data with the Tech-2.
Does the Tech-2 display antitheft lamp data ON?

—

Go to Step 5 Go

to

Step 6

5

Replace the antitheft lamp.

—

Verify repair

—

6

Replace the antitheft control unit (ACU).

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

Was the action complete?

—

Verify repair

—

11B-40 ANTITHEFT SYSTEM

DTC 13 Security Code not yet programmed

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 by Tech-
2.
• All transmitters (Remote Key).
If a problem is found, reprogramming as necessary.

(Refer to “Important information on Programming”)

Was the action complete?

—

Go to Step 4 Go

to

Step 5

4

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 Tech-2.
Is DTC 13 stored?

—

Go to Step 5 Verify

repair

5

Recheck the DTC.

1. Non-OEM parts switch is “OFF” or remove the

Non-OEM parts.

2. Remove the accessory and another key from key.

3. Move the vehicle to a new location.

4. Key position is “OFF” and keep the position for

more than 30 seconds.

5. Key position is “ON”.

6. Check the DTC on Tech-2.
Is DTC 13 stored?

—

Go to Step 6 Verify

repair

6

Replace the Antitheft control unit (ACU).

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

Is DTC 13 stored?

—

Go to Step 7 Verify

repair

7

Replace the key and lock cylinder assembly with
Antitheft system (ACU ).

IMPORTANT:
• ACU is not replacing simultaneously.
• After replace lock cylinders, perform the following

below the items.

• Replace the keys and key cylinders.
• Program the Antitheft system.

(Refer to “Important information on Programming”)

Was the action complete?

—

Verify repair

—

ANTITHEFT SYSTEM 11B-41

DTC 14 No Remote Key Programmed

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.
• 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 14 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 the
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 14 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

—