Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual - part 116

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–82

Chart C–1

4H switch circuit is short-circuited to GND.

Function of circuit

—

Fail condition

When the TOD switch is selected to 4L from TOD, all the indicator lamps are turned off.

Indicator lamp state

TOD switch position

4L

4B2–83

DRIVE LINE CONTROL SYSTEM (TOD)

D04R200022

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–84

Step

Action

Yes

No

1

1. Turn on the starter switch.
2. The car stops, the AT selector is N position and the brake is

applied.

When the TOD switch is changed to the TOD position, is 12V
observed between terminals 31 and 47 (4H switch)?

Go to 

Step 2

Go to 

Step 9

2

1. The car stops the AT selector is N position and the brake is

applied.

When the TOD switch is changed to the 4L position, is 12V
observed between terminals 31 and 47 (4H switch)?

Go to 

Step 3

Go to 

Step 9

3

1. Turn off the starter switch.

Is there the continuity terminal 14 and 7?

Go to 

Step 4

Replace the TOD

indicator lamp

bulb, or repair the

circuit.

Go to 

Step 13

4

Is there the continuity between the terminals 14 and 19?

Go to 

Step 5

Replace the TOD

indicator lamp

bulb, or repair the

circuit.

Go to 

Step 13

5

Is there the continuity between the terminal 14 and 8?

Go to 

Step 6

Replace the TOD

indicator lamp

bulb, or repair the

circuit.

Go to 

Step 13

6

1. Turn on the starter switch.
2. The car stops the AT selector is N position and the brake is

applied.

When the TOD switch is changed to the 4L position, is 0V
observed between terminal 7 and 47? (for 2 seconds after the
starter switch ON) ?

Go to 

Step 7

The ECU has

frailed. Replace

the ECU.

Go to 

Step13

7

Is 0V observed between terminal 19 and 47? (for 2 seconds after
the starter switch ON)

Go to 

Step 8

The ECU has

failed. Replace

the ECU.

Go to 

Step 13

8

Is 0V observed between terminal 8 and 47? (for 2 seconds after
the starter switch ON)

The phenomenon

is not

reproduced.

Refer to 

“Trouble

intermittently

observed”.

The ECU has

failed. Replace

the ECU.

Go to 

Step 13

9

1. The car stops, the AT selector is N position, and the brake is

applied.

2. The TOD switch is changed to the TOD (or 2H) position.
3. Turn off the starter switch.
4. Disconnect the ECU connector (C–37).

Is there the continuity between the connector (C–37) terminal 9
and 25?

Go to 

Step 11

Go to 

Step 10

4B2–85

DRIVE LINE CONTROL SYSTEM (TOD)

Step

No

Yes

Action

10

1. Connect the ECU connector (C–37) and turn on the starter

switch.

2. The car stops, the AT selector is N position, and the brake is

applied.

3. Change the TOD switch to the 4L position.
4. Turn off the starter switch and disconnect the ECU connector

(C–37).

Is there the continuity between the connector (C–37) terminal 9
and 25?

Go to 

Step 11

The ECU has

failed. Replace

the ECU.

Go to 

Step 13

11

1. Disconnect the connector (H–7).

Is the continuity established between the transfer connector
terminals (H–7)4 and (C–37) 9?

Go to 

Step 12

The harness is

broken between

terminal (H–7) 4

and (C–37) 9.

Repair the circuit.

Go to 

Step 13

12

1. Connect the connector (H–7).
2. Disconnect the connector (A–1).

Is there the continuity between the connector terminal (A–1) 4 and
(C–37) 9?

Repair the

transfer.

Go to 

Step 13

The harness

between the

connector

terminal (C–37) 9

and (A–1) 4 is

short-circuited to
GND. Repair the

circuit.

Go to 

Step 13

13

Check that all the parts are mounted.

Is this step complete?

Verify the repair.

Return to Step 13