Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1145

DRIVELINE CONTROL SYSTEM

4B–13

3. When the 4WD Indicator lamp continues to blink after performing Solution 2.

Step

Action

Yes

No

1

Check the air pressure and wear on all tires.
Were problems found?

Correct the tire

pressure and

replace worn tires

then perform

“Solution 2.”

Go to Step 2

2

Can the transfer lever be operated from High to 4L or vice versa?

Go to Step 3

If the motor

actuator harness

was disconnected,

then repair and

repeat step 1.

If the motor

actuator is

inoperative, then

replace the motor

actuator and

repeat step 1.

If the transfer case

was not working

properly, then

repair as needed

and repeat step 1.

3

Confirm that the transfer switch is operating normally. Replace if
needed.

Go to Step 4

—

4

1. Disconnect the connector C–47.

2. Turn on the starter switch

3. Measure voltage between the connector C–47 terminals 4

and 3, when 4WD switch on instrument panel is switched on
2WD and 4WD position.

Is the motor actuator voltage on the axle as “Time Chart of
Shifting Under Normal Condition” aforementioned? Refer to the
page (4B–3).

Go to Step 8

Go to Step 5

5

1. Inspect the wiring for poor electrical connections, open or

short to ground between the connector-terminal E56–1 and
B19–7, E57–1 and ground, C47–1 and B19–6, C47–2 and
ground, H18–1 and B19–12, B19–8 and C49–3, H17–19 and
C49–3, C49–1 and C47–4, C49–2 and C47–3, and C49–6
and ground.

2. Repair the circuit.

Is the motor actuator voltage on the axle as “Time Chart of
Shifting Under Normal Condition” aforementioned? Refer to the
page (4B–3).

Go to Step 8

Go to Step 6

6

Check the axle switch continuity between the connector C–47
terminals 1 and 2.
Is the axle switch open or close as “Time Chart of Shifting Under
Normal Condition” aforementioned? Refer to the page (4B–3).

Go to Step 8

Go to Step 7

7

Replace the axle motor actuator.

Go to Step 8

—

8

Reconnect all components, ensure all components are properly
mounted.
Was this step finished

Trace this chart

from the start.

Go to Step 8

4B–14

DRIVELINE CONTROL SYSTEM

Fault on Switching from 4WD to 2WD

1. Case that indicator dose not blink nor turn out.

Step

Action

Yes

No

1

Does the indicator lamp turn off at ignition off?

Go to Step 2

Short circuit of the

indicator harness.

2

Is the 4WD switch on 2WD position?

Disconnection on

the 4WD switch

harness or

breakdown of the

4WD switch in

open state. Trace
this chart from the

start after repair or

replace.

Turn the 4WD

switch to 2WD

position. Trace this

chart from the

start.

DRIVELINE CONTROL SYSTEM

4B–15

2. When the indicator lamp continues to blink (at 2Hz) after performing Solution 3.

Step

Action

Yes

No

1

Check the air pressure and wear on all tires.
Were problems found?

Perform “Solution

3” after correcting

the tire air pressure

and replacing worn

tires.

Go to Step 2

2

Can the transfer lever be operated from High to 4L or vice versa?

If the motor

actuator

harness was

disconnected,
then repair as

needed and

repeat step 1.

If the transfer

case was not

working

properly, then

repair as

needed and

repeat step 1.

If the motor

actuator is

inoperative,

then replace the

motor actuator

and repeat step

1.

Go to Step 3

3

1. Disconnect the connector C–47.

2. Turn on the starter switch

3. Measure voltage between the connector C–47 terminals 4

and 3, when 4WD switch on instrument panel is switched on
2WD and 4WD position.

Is the motor actuator voltage on the axle as “Time Chart of
Shifting Under Normal Condition” aforementioned? Refer to the
page (4B–3).

Go to Step 7

Go to Step 4

4

1. Inspect the wiring for poor electrical connections, open or

short to ground between the connector-terminal C47–1 and
B19–6, C47–2 and ground, H18–1 and B19–12, B19–8 and
C49–3, H17–19 and C49–3, C49–1 and C47–4, C49–2 and
C47–3, and C49–6 and ground.

2. Repair the circuit.

Is the motor actuator voltage on the axle as “Time Chart of
Shifting Under Normal Condition” aforementioned? Refer to the
page (4B–3).

Go to Step 7

Go to Step 5

5

Check the axle switch continuity between the connector C–47
terminals 1 and 2.
Is the axle switch open or close as “Time Chart of Shifting Under
Normal Condition” aforementioned? Refer to the page (4B–3).

Go to Step 7

Go to Step 6

6

Replace the axle motor actuator.

Go to Step 7

—

7

Reconnect all components, ensure all components are properly
mounted.
Was this step finished

Trace this chart

from the start.

Go to Step 7

4B–16

DRIVELINE CONTROL SYSTEM

3. Case that indicator's blinking changes to 4Hz after aforementioned Solution 4 is carried out.

Step

Action

Yes

No

1

Can the transfer lever be operated from High to 4L or vice versa?

If the motor

actuator

harness was

disconnected,
then repair as

needed and

repeat step 1.

If the motor

actuator is

inoperative,

then replace the

motor actuator

and repeat step

1.

If the transfer

case was not

working

properly, then

repair as

needed and

repeat step 1.

Faults on the ECU.

Trace this chart

from the start after

replace.