SECURITY ISUZU KB P190 2007 Workshop Repair Manual

11B-66 ANTITHEFT SYSTEM
DTC 125 Output Alarm Horn Broken Wire
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 125 stored? — Go to Step 3 Refer to
Diagnostic Aids
3 1. Check the alarm horn circuit for an open, short to
ground, or short to voltage.
Also, check the alarm horn connector for damage.
2. If a problem found, repair as necessary.
W as the problem found? — Verify repair Go to Step 4
4 Check the alarm horn function.
1. Key position is “OFF”.
2. Connect a jumper wire between ACU terminal 5 and body ground.
3. Key position is “ON”.
4. Observe to operate sound with the alarm horn.
If the problem found about the alarm horn, replace as
necessary.
W as the problem found? — Verify repair Go to Step 5
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 —


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ISUZU KB P190 2007