Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. 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.
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