Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual — part 124
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–114
Step
No
Yes
Action
12
1. Start the engine.
Is the engine pulse signal between terminal 2 and 47 at engine
speed under 1500 rpm within the standard? Standard: less than
4500 Hz
Replace the
ECU.
Go to
Step 13
The engine pulse
signal is
abnormal. Repair
or replace the
PCM.
Go to
Step 13
13
Check that all the parts are mounted.
Is this step complete?
Verify the repair.
Go to
Step 13
Continuity between terminal in 4L position
(Table: continuity)
Terminals
No.
26 and
24
39 and
24
25 and
24
38 and
24
Continuity
of 4L
position
YES
NO
YES
YES or
NO
Standard (Table: voltage)
Unit: V
Terminals
28 and 47
41 and 47
27 and 47
Voltage
0
12
0
4B2–115
DRIVE LINE CONTROL SYSTEM (TOD)
Chart 6
The transfer does not change to high from low.
Function of circuit
—
Fail condition
When the TOD switch is selected to the TOD, the transfer does not change to the high
range.
D04R200018
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–116
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 TOD
position.
Do the front, rear, and AUTO lamps 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 TOD 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 TOD mode?
The phenomenon
is not
reproduced.
Refer to
“Trouble
intermittently
observed”.
Go to
Step 7
7
Is the continuity corresponding to the encoder position between
the terminals ranged within the any case (case 1, 2 and 3) of TOD
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) and brake switch
connector (I–31).
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
4B2–117
DRIVE LINE CONTROL SYSTEM (TOD)
Step
No
Yes
Action
12
1. Start the engine.
Is the engine pulse signal between terminal 2 and 47 at engine
speed under 1500 rpm within the standard? Standard: less than
4500 Hz
Replace the
ECU.
Go to
Step 13
The engine pulse
signal is
abnormal. Repair
or replace the
PCM.
Go to
Step 13
13
Check that all the parts are mounted.
Is this step complete?
Verify the repair.
Go to
Step 13
Continuity in TOD position (Table: continuity)
Case
Continuity between terminals
26 and
24
39 and
24
25 and
24
38 and
24
1
NO
NO
NO
YES
2
NO
YES
NO
YES
3
YES
YES
NO
YES
Standard (Table: voltage)
Unit: V
Terminals
28 and 47
41 and 47
27 and 47
Voltage
0
12
0
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