Page 473 of 2100
DRIVE LINE CONTROL SYSTEM (TOD) 4B2±94
Chart E±1AXLE switch circuit wires are broken.
Function of circuitÐ
Fail conditionBoth the TOD and 4L modes are disabled. (The transition status is not removed.)
Indicator lamp state
TOD switch positionTOD4L
D04R200023
Page 474 of 2100

4B2±95
DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
1Start the engine.
When the TOD switch is selected to the TOD position, is 0V
observed between terminals 42 and 47?
Go to Step 2Go to Step 4
21. The car stops, the AT selector is N position, and the brake is
applied.
2. Select the TOD switch to the 4L position.
Is 0V observed between terminals 42 and 47?
Go to Step 3Go to Step 4
31. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 4L position, is 12V
observed between the terminal 19 and 47?The phenomenon
is not
reproduced.
Refer to
ªTroubles
intermittently
observedº.
The ECU has
failed.Replace
the ECU.
Go to
Step 8
41. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 2H position, is the battery
voltage observed between the terminal 23 and 47.
Go to Step 5Go to Step 7
5When the TOD switch is selected to the TOD position (TOD
mode), is 0 ~ 1V observed between terminals 23 and 47?
Go to Step 6Go to Step 7
61. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 4L position, is 0V
observed between terminals 23 and 47?Repair the circuit
or check the
ªFront Axle
Disconnectº.
(Refer to
section
4B
)
Go to
Step 8Go to Step 7
7Is any of the trouble codes 28 (P1760), 32 (P1761) and 33
(P1762) recorded?Examine the
trouble based on
ªDiagnosis from
Trouble Codesº.The ECU has
failed. Replace
the ECU.
Go to
Step 8
8Check that all the parts are mounted.
Is this step complete?
Verify the repair.Go to Step 8
Page 475 of 2100
DRIVE LINE CONTROL SYSTEM (TOD) 4B2±96
Chart E±2The AXLE switch circuit is short-circuited to GND.
Function of circuitÐ
Fail conditionEven after the TOD switch is selected to the 2H position, the 2H mode is not enabled.
(The transition status is not removed.)
Indicator lamp state
TOD switch position2H
D04R200023
Page 476 of 2100

4B2±97
DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
1Start the engine.
When the TOD switch is selected to the TOD position, is 0V
observed between terminals 42 and 47?
Go to Step 2Go to Step 6
21. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 4L position, is 0V
observed between terminals 42 and 47?
Go to Step 3Go to Step 6
31. The car stops, the AT selector is N position, and the brake is
applied.
2. Select the TOD switch to the 2H position.
Is 5V observed between terminals 42 and 47?
Go to Step 4Go to Sep 6
4Is 12V observed between terminals 7 and 47?
Go to Step 5
Replace the
ECU.
Go to
Step 10
5Is 12V observed between terminals 19 and 47?The phenomenon
is not
reproduced.
Refer to
ªTroubles
intermittently
observedº.
The ECU has
failed.Replace
the ECU.
Go to
Step 10
61. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 2H position, is the battery
voltage observed between terminals 23 and 47?
Go to Step 7Go to Step 9
71. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the TOD position, is 0V
observed between terminals 23 and 47?
Go to Step 8Go to Step 9
81. The car stops, the AT selector is N position, and the brake is
applied.
When the TOD switch is selected to the 4L position, is 0V
observed between terminals 23 and 47?Repair the circuit
or check the
ªFront Axle
Disconnectº.
(Refer to
section
4B
)
Go to
Step 10Go to Step 9
9Is any of the trouble codes 28 (P1760), 32 (P1761) and 33
(P1762) recorded?Examine the
trouble based on
ªDiagnosis from
Trouble Codesº.The ECU has
failed. Replace
the ECU.
Go to
Step 10
10Check that all the parts are mounted.
Is this step complete?
Verify the repair.Go to Step 10
Page 477 of 2100
DRIVE LINE CONTROL SYSTEM (TOD) 4B2±98
Chart GThe trouble codes are displayed.
Function of circuitÐ
Fail condition
Indicator lamp state
TOD switch positionÐ
D04R200009
Page 478 of 2100
4B2±99
DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
1Disconnect the ECU connector from ECU.
Is there the continuity established between terminals (C±37)7 and
(C±37)25?
Go to Step 2
The ECU has
failed. Replace
the ECU.
Go to
Step 3
2Is the self-diagnostic connector short-circuited?
Go to Step 3
Open the
self-diagnostic
connector.
Go to
Step 3
31. Check that all the parts are mounted.
2. Clear the trouble codes.
Is this step complete?
Verify the repair.Go to Step 3
Page 479 of 2100
DRIVE LINE CONTROL SYSTEM (TOD) 4B2±100
Chart HLighting switch circuit
Function of circuitReads in the status of lighting switch, and reduces the indicator at night.
Fail conditionEven if the lighting switch is pressed on and off, brightness does not change.
Indicator lamp state
TOD switch positionAll position (exsample TOD mode)
D04R200009
Page 480 of 2100
4B2±101
DRIVE LINE CONTROL SYSTEM (TOD)
StepActionYe sNo
11. Turn on the starter switch.
2. Turn off the lighting switch.
Is 0V observed between the EUC terminal 40 and 47?
Go to Step 2
Lighting switch
battery circuit
short. Repair the
circuit.
Go to
Step 4
2Turn lighting switch ªONº.
Is the battery voltage observed between ECU terminal 40 and 47?
Go to Step 3
Wires are broken
in lighting switch
circuit. Repair the
circuit.
Go to
Step 4
3While the lighting switch is pressed on and off, does the
brightness of the indicator change?The phenomenon
is not
reproduced.
Refer to
ªTroubles
intermittently
observedº
The ECU has
failed. Replace
the ECU.
Go to
Step 4
4Check that all the parts are mounted.
Is this step complete?
Verify the repair.Go to Step 4