ECU ISUZU KB P190 2007 Workshop Repair Manual

8A-538 ELECTRICAL-BODY AND CHASSIS
TROUBLESHOOTING
Diagnostic procedure
•
Check the operation "Lock / unlock" by using
transmitter (remote key) on the vehicle.
• Check the operation "ON / OFF" for Driver side
door SW on the vehicle.
• Perform the Keyless entry System Check.
Diagnostic Aids
An intermittent may be caused by the following:
• Poor connections.
• Miss routed harness.
• Rubbed through wire insulation.
• Broken wire inside the insulation.
Check for the following conditions:
• Poor connection at keyless entry control unit-
Inspect harness connectors for backed out
terminals, improper mating, broken locks,
improperly formed or damaged terminals, and poo
r
terminal to wire connection.
• Damaged harness-Inspect the wiring harness fo
r
damage.
Check the Electro-Magnetic Interference (EMI)
• Location of vehicle check
Move the vehicle to a new location and perform
the check again.
• Non-OEM Parts.
Switch is “OFF” or remove the Non-OEM parts and
perform the check again.
• Other
Remove the accessory and another key from key.

Check the other items.
• Battery voltage is low.
• Keyless entry programming functions.
• Registration for security code.
• Ignition switch operation.
• Meter system is malfunction.
Check the operation
Check the operation "Lock / unlock" by using
transmitter (remote key) on the vehicle.
Notice
If so equipped the Anti Theft, Refer to ANTI
THEFT SYSTEM in 11B Section.


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8A-540 ELECTRICAL-BODY AND CHASSIS
ID Code not yet programmed
Step Action Value (s) Yes No
1 W as the Keyless entry System Check performed?
— Go to Step 2 Go to
Keyless
entry
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the Keyless entry programming functions.
• All transmitters (Remote Key).
If a problem is found, reprogramming as necessary.
(Refer to “ID code new registration”)
W as the action complete? — Go to Step 4 Go to ID code
new registration
4 Check the operation "Lock / unlock" by using transmitter (Remote key) on the vehicle.
W as the problem found? — Go to Step 5 Verify repair
5
Recheck the following condition.
1. Non-OEM parts switch is “OFF” or remove the Non-OEM parts.
2. Move the vehicle to a new location.
3. Check the operation "Lock / unlock" by using transmitter (Remote key) on the vehicle.
W as the problem found? — Go to Step 6 Verify repair
6 Replace the Keyless entry control unit (KCU).
IMPORTANT: The replacement KCU must be
programmed the security code.
W as the problem found? — Go to Step 7 Verify repair
7 Replace the key and lock cylinder assembly with
Keyless entry system (KCU ).
IMPORTANT:
• KCU is not replacing simultaneously.
• After replace lock cylinders, perform the following
below the items.
• Replace the keys and key cylinders.
• Program the Keyless entry system.
(Refer to “ID code new registration”)
W as the action complete? — Verify repair —

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ELECTRICAL-BODY AND CHASSIS 8A-541
No Remote Key Programmed
Step Action Value (s) Yes No
1 W as the Keyless entry System Check performed?
— Go to Step 2 Go to
keyless
entry
System Check
2 Check the key. Is a key peculiar to a vehicle? — Go to Step 3 Refer to
Diagnostic Aids
3 Check the keyless entry programming functions.
• Transmitter (Remote Key).
W as a problem found? — Go to Step 4 Go to Step 5
4 Perform the keyless entry programming functions.
• Transmitter (Remote Key).
(Refer to “ID code new registration”)
W as the action complete? — Go to Step 5 —
5 Replace the transmitter (Remote Key).
IMPORTANT: The replacement transmitter (Remote
Key) must be programmed the ID code.
W as the action complete? — Verify repair —
Door Lock Actuators Short Circuit to Ground
Step Action Value (s) Yes No
1 W as the Keyless entry System Check performed?
— Go to Step 2 Go to
keyless
entry
System Check
2 Check the door lock actuators circuit.
1. Ignition key position is “OFF”.
2. Disconnect the keyless entry control unit (KCU).
3. Check the door lock actuator circuit for short to ground.
If the problem found, repair as necessary.
W as a problem found? — Verify repair Go to Step 3
3 Check the operation "Lock / unlock" by using
transmitter (Remote key) on the vehicle.
W as the problem found? — Go to Step 4 Verify repair
4 Check the door lock actuator.
If the problem found, repair as necessary.
W as a problem found? — Verify repair Go to Step 5
5 Replace the Keyless entry control unit (KCU).
IMPORTANT: The replacement KCU must be
programmed the security code.
W as the problem found? — Go to Step 7 Verify repair


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8A-544 ELECTRICAL-BODY AND CHASSIS
Keyless Entry System

General Description
The system’s main features are summarized as follows.
・ Keyless entry with visual feedback
・ Highly secure encrypted transmission format
incorporating rolling code strategy
・ Field programmable remote keys
・ Door lock control
・ Illuminated entry with fade out
・ Illuminated exit
・ Remote door lock / ignition key interlock
・ Door ajar warning indicator in the cluster


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ELECTRICAL-BODY AND CHASSIS 8A-577
ANTI THEFT INDICATOR


Removal
1. Disconnect the battery ground cable.



RTW 78ASH001801
2. Remove the side ventilation grille (1).



RTW 78ASH001701
3. Disconnect the indicator connector and screw from the
backside of the side ventilation grille to remove the anti theft
indicator (1).


Installation
To install, follow the removal steps in the reverse order, noting
the following point.
1. Push in the switch with your fingers until it locks securely.


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8A-580 ELECTRICAL-BODY AND CHASSIS
TECH-2 OPERATION AND PROGRAMING
KEYLESS ENTRY
General Description
W hen the anti-theft and keyless entry control unit and/or the
transmitters (remote keys) are replaced, the security codes
and/or transmitter ID codes must be programmed by using he
Tech-2. The following pages show the procedures to program
in regard to the anti-theft and keyless entry system. Please
refer to Tech-2 scan tool user’s guide in detail.








901RW 180
Legend
(1) PCMCIA Card (4) DLC Cable
(2) RS 232 Loop Back Connector (5)Tech–2
(3) SAE 16/19 Adaptor




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8A-584 ELECTRICAL-BODY AND CHASSIS
RTW 38DLH000101
Menu
The left table shows witch functions are used for the
available equipment versions.
NOTE: Marked items are not applied for keyless entry
system.

DTC
On OBD has three options available in the Tech-2
DTC mode to display the enhanced information
available.
• Read DTC Info Ordered By Priority.
• Read DTC Info As Stored By ECU.
• Clear DTC and Alarm Code Info.

Clear DTC Information
To clear Diagnostic Trouble Codes (DTCs), Use the
diagnostic scan tool “Clear DTC Information” function.

Tech-2 Data Display
The Tech-2 data values represent values that would
be seen on a normally-keyless entry system.



RTW 38DSH001601
Actuator Test
Unlock/Lock Test
Check whether opening and closing of a door lock
can be performed by operation of Tech-2.
1. Turn the key “OFF”.
2. Turn the key “ON”.
3. Check the display and test menu.
4. Operate the Tech-2.


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ELECTRICAL-BODY AND CHASSIS 8A-585

RTW 38DSH001701
Turn Signal Test
Check the turn signal lamp lights up by operation of
Tech-2.
1. Turn the key “OFF”.
2. Turn the key “ON”.
3. Check the display and test menu.
4. Operate the Tech-2.


060R200289
Programming
Erase Remove Key
To erase remove control key code in the control unit.
1. Check the display of Tech-2 and press “Confirm”
key.
RTW 38DSH001001
2. Enter security code.
3. Press “Not Okay” or “Okay” key.

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8B-6 CRUISE CONTROL SYSTEM
Cruise Control Main Switch



Removal
1. Disconnect the battery ground cable.



RTW 78ASH001801
2. Remove the side ventilation grille 1.







RTW 78ASH002301
3. Disconnect the switch connector and push the lock from the
backside of the side ventilation grille to remove the cruise
control main switch.



Installation
To install, follow the removal procedure in reverse order, noting
the following point.
1. Push in the switch with your fingers until it locks securely.

Cruise Control Switch (Combination Switch)



Removal and Installation
Refer to the Lighting Switch (Combination Switch) removal and
installation procedure of Lighting in Body and Chassis section.


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SUPPLEMENTAL RESTRAINT SYSTEM 9A-27
5. Remove the passenger air bag assembly from the
vehicle. Refer to “Passenger Air Bag Assembl
y
Removal “.
6. Clear a space on the ground approximately 183 cm (six feet) in diameter where the fixture with
attached air bag assembly is to be placed fo
r
deployment. A paved outdoor location where there
is no activity is preferred. If an outdoor location is
not available, a space on the shop floor where
there is no activity and there is sufficient ventilation
is recommended. Ensure that no loose o
r
flammable objects are within the deployment area.
7. Place the 5-8840-2420-0 on the bench vise. This is necessary to provide sufficient stabilization o
f
the fixture during deployment.
8. Attach the passenger air bag assembly in the 5- 8840-2420-0. The air bag assembly must be
mounted such that the bag will deploy upward.
SECURELY HAND–TIGHTEN ALL FASTENERS
PRIOR TO DEPLOYMENT.




RTW 79ASH000601
9. Stretch the SRS Deployment Harness and pigtail
adapter from the air bag assembly to its full length.
10. Place a power source near the shorted end of the SRS deployment harness. (Recommended
application: 12 volts minimum, 2 amps minimum.
A vehicle battery is suggested.)
11. Connect the air bag assembly to the pigtail adapte
r
on the SRS deployment harness. The SRS
Deployment Harness shall remain shorted and not
be connected to a power source until the air bag is
to be deployed. The air bag assembly will
immediately deploy the air bag when a powe
r
source is connected to it.

NOTE: Ensure that the pigtail adapter is firmly seated
into the air bag assembly connector. Failure to full
y
seat the connectors may leave the shorting bar located
in the air bag assembly connector functioning (shorting
the deployment circuit) and may result in no
deployment of the air bag assembly.
12. Verify that the area around the passenger air bag assembly is clear of all people and loose o
r
flammable objects.
13. Verify that the passenger air bag assembly is firmly and properly in the 5-8840-2420-0.
14. Notify all people in the immediate area of you
r
intention to deploy the passenger air bag
assembly. The deployment will be accompanied
by a substantial noise which may startle the
uninformed.
15. Separate the two banana plugs on the SRS deployment harness.
NOTE: W hen the air bag deploys, the driver air bag
assembly may jump about 30 cm (one foot) vertically.
This is a normal reaction of the driver air bag to the
force of the rapid gas expansion inside the air bag.
NOTE: W hen the air bag deploys, the rapid gas
expansion will create a substantial noise. Notify all
people in the immediate area that you intend to deplo
y
the air bag assembly.
WARNING: THE DEPLOYMENT HARNESS SHALL
REMAIN SHORTED AND NOT BE CONNECTED TO
A POWER SOURCE UNTIL THE AIR BAG IS TO BE
DEPLOYED. THE AIR BAG ASSEMBLY WILL
IMMEDIATELY DEPLOY THE AIR BAG WHEN
A
POWER SOURCE IS CONNECTED TO IT.
CONNECTING THE DEPLOYMENT HARNESS TO
THE POWER SOURCE SHOULD ALWAYS BE THE
LAST STEP IN THE AIR BAG ASSEMBLY
DEPLOYMENT PROCEDURE. FAILURE TO
FOLLOW PROCEDURES IN THE ORDER LISTED
MAY RESULT IN PERSONAL INJURY.
16. Connect the SRS deployment harness wires to the power source to immediately deploy the air bag
assembly. Recommended application : 12 volts
minimum, 2 amps minimum. A vehicle battery is
suggested.
17. Disconnect the SRS deployment harness from the power source.
18. Short the two SRS deployment harness leads together by fully seating one banana plug into the
other.
19. In the unlikely event that the passenger air bag assembly did not deploy after following these
procedures, proceed immediately with Steps 24
through 26. If the passenger air bag assembl
y
deployed as intended, proceed with Steps 20
through 23.

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