Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 123

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–110

Chart 4

The braking distance gets long even when the ABS is active.

Function of circuit

—

Fail condition

Enough deceleration is not obtained and the braking distance gets long even when the

ABS is active in the 2H mode.

D04R200021

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–111

Step

Action

Yes

No

1

Are the brake and ABS systems healthy?

Go to

Step 2

Repair the brake

and ABS. (Refer to

section 5A and 5B)

2

Turn on the starter switch.
Is the battery voltage observed between terminals 14 and 47?

Go to

Step 3

Repair the

battery system.

Go to

Step 5

3

1. Select the TOD switch to the 2H position.

Does the voltage between terminals 36 and 47 range between
7.5 and 16V (0.12 seconds make a cycle)?

Go to

Step 4

The ECU has

failed. Replace

the ECU.

Go to

Step 5

4

1. Turn off the starter switch.

2. Disconnect the connector (C–37).

Is there the continuity between the connector terminal (C–37) 14
and (C–6) 8?

The

phenomenon is

not reproduced.

Refer to

“Trouble

intermittently

observed".

Repair the

harness.

Go to

Step 5

5

Check that all the parts are mounted.
Is this step complete?

Verify the repair.

Go to

Step 5

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–112

Chart 5

The transfer does not change to low from high.

Function of circuit

—

Fail condition

When the TOD switch is selected to the 4L position, the transfer does not change to the

low range.

D04R200018

4B2–113

DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1

1. Turn on the starter switch.

Is any of the trouble codes 41 (P1741), 42 (P1773), 43 (P1743)
and 55 (P1755) recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

Go to

Step 2

2

Is any of the trouble codes 13 (P1735), 14 (P1731), 15 (P1736),
16 (P1737), 24 (P1733), and 27 (P1738) recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

Go to

Step 3

3

Is the trouble code 17 (P1774) recorded?

Examine the

trouble based on

“Diagnosis from

Trouble Codes”.

Go to

Step 4

4

1. Turn on the starter switch.
2. The car stops, engine speed is less than 1500 rpm, the AT

selector is N position, and select the TOD switch to the 4L
position.

Do the front lamp and rear lamp in the indicator blink?

Go to

Step 5

Examine the

trouble based on

“Trouble

Diagnosis

Depending on the

Status of TOD

Indicator”.

5

1. Step on the brake pedal.

Is the transfer changed to the 4L mode?

The phenomenon

is not

reproduced.

Refer to

“Trouble

intermittently

observed”.

Go to

Step 6

6

When the vehicle is moved forth and back, is the transfer changed
to the 4L mode?

The phenomenon

is not

reproduced.

Refer to

“Trouble

intermittently

observed”.

Go to

Step 7

7

Does the continuity corresponding to the encoder position
between the terminals comply with the 4L position in the following
table (continuity)?

Examine the

trouble based on

“Trouble

diagnosis

Depending on

The Status of

TOD Indicator”.

Go to

Step 8

8

1. Step on the brake pedal.

Is the battery voltage observed between the terminal 37 and 47?

Go to

Step 10

Go to

Step 9

9

1. Turn off the starter switch.
2. Disconnect the ECU connector (C–37) and the brake switch

connector (I–31).

Is there the continuity between the connector terminal (C–37) 15
and (I–31) 4?

The brake switch

is abnormal.

Repair or replace

the brake switch.

Go to

Step 13

Repair the

harness.

Go to

Step 13

10

1. Select the AT selector to the N position.

Is the voltage between the terminals ranged within the following
table (voltage)?

Go to

Step 12

Go to

Step 11

11

1. Turn off the starter switch.
2. Disconnect the ECU connector (C–37).
3. Disconnect the AT mode switch connector (E–41).

Is there the continuity between the following connector terminals?
(C–37)6 and (E–41)8 (C–37)19 and (E–41)7 (C–37)5 and
(E–41)6

Repair or replace

the AT mode

switch.

Go to

Step 13

Repair the circuit

which has no

continuity.

Go to

Step 13