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Step
6
Check for open in "BLK/ORN" wire:
1) With the ignition switch at ON position, check voltage
between "G24-2" wire terminal at immobilizer control
module and body ground.
Is voltage 0?
7
Check for open in "YEL/BLK" wire:
1) Disconnect immobilizer control module connector "G24"
referring to "Immobilizer Control Module Removal and
Installation: ".
2) Disconnect ECM connector "E23" referring to "Engine
Control Module (ECM) Removal and Installation: in
Section 1C".
3) Check resistance between "G24-3" wire terminal at
immobilizer control module connector and "E23-28" wire
terminal at ECM connector.
Is resistance infinite?
8
Check for short to ground circuit in "YEL/BLK" wire:
1) With immobilizer control module connector "G24" and
ECM connector "E23" disconnected, check resistance
between "G24-3" wire terminal at immobilizer control
module connector and body ground.
Is resistance infinite?
9
Check for short to power circuit in "YEL/BLK" wire:
1) With immobilizer control module connector "G24" and
ECM connector "E23" disconnected, turn the ignition
switch to ON position.
2) Check voltage between "G24-3" wire terminal at
immobilizer control module connector and body ground.
Is voltage 0 V?
10 Check for open in "YEL/RED" wire:
1) With immobilizer control module connector "G24" and
ECM connector "E23" disconnected, check resistance
between "G24-4" wire terminal at immobilizer control
module connector and "E23-13" wire terminal at ECM
connector.
Is resistance infinite?
11
Check for short to ground circuit in "YEL/RED" wire:
1) With immobilizer control module connector "G24" and
ECM connector "E23" disconnected, check resistance
between "G24-4" wire terminal at immobilizer control
module connector and body ground.
Is resistance infinite?
12 Check for short to power circuit in "YEL/RED" wire:
1) With immobilizer control module connector "G24" and
ECM connector "E23" disconnected, turn the ignition
switch to ON position.
2) Check voltage between "G24-4" wire terminal at
immobilizer control module connector and body ground.
Is voltage 0 V?
Action
Immobilizer Control System:
Yes
Go to Step 7.
Repair open in "YEL/
BLK" wire.
Go to Step 9.
Go to Step 10.
Repair open in "YEL/
RED" wire.
Go to Step 12.
Go to Step 13.
10C-9
No
Repair open in "BLK/
ORN" wire.
Go to Step 8.
Repair short to ground
circuit in "YEL/BLK"
wire.
Repair short to power
circuit in "YEL/BLK"
wire.
Go to Step 11.
Repair short to ground
circuit in "YEL/RED"
wire.
Repair short to power
circuit in "YEL/RED"
wire.
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