Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1144

DRIVELINE CONTROL SYSTEM

4B–9

Wiring Diagram

D04R200028

4B–10

DRIVELINE CONTROL SYSTEM

D04R200027

DRIVELINE CONTROL SYSTEM

4B–11

Connector List

No.

Connector face

B-8

B-19

C-16

C-36

C-47

C-49

E-30

E-56

E-57

E-60

H-6

H-15

H-17

H-18

I-1

I-19

No.

Connector face

4B–12

DRIVELINE CONTROL SYSTEM

Diagnosis of The Faults Based on the
Status of 4WD Indicator Lamp, 4WD Switch
and T/F Change Lever

A diagnostic flow chart is shown below. If after
performing the diagnosis and a condition still exists,
then there may be a fault in the ECU. The ECU will
need to be replaced and perform the diagnostic flow
chart again.

Fault on Switching from 2WD to 4WD

1. When the 4WD indicator lamp blinking pattern

changes (from 2Hz to 4Hz) after performing
“Solution 1.”
The motor actuator or the transfer case assembly
may be inoperative. Remove the motor actuator
and perform bench test. Make any needed repairs
and perform “Solution 1” again. Then disassemble
and inspect the transfer case assembly. Repair or
replace as needed. If after the repairs, the
condition still exists, then replace the ECU.

2. When the 4WD indicator lamp do not blink or

light up when switching from 2WD to 4WD.

Step

Action

Yes

No

1

Is ignition turned on?

Go to Step 2

Turn on the ignition
and trace this chart

from start.

2

Does the 4WD indicator lamp light up during the two second
initialization after the ignition is turned on?

Go to Step 3

Burned out

indicator lamp or

disconnected
harness wire.

Perform the

diagnostic chart

from step 1 after

repair or

replacement.

3

Is the 4WD switch activated from 2WD to 4WD mode?

Short-circuit

(body short) on

harness of the

4WD switch.

Inoperative

4WD switch

(stuck closed

condition).

Trace this chart

from the step 1

after repair or

replace.

Push the 4WD

switch to 4WD.