Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 103
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–30
Checking Failed TOD Control Unit Pin
NOTE:
1. Unplug the ECU connector and the pins, unless
otherwise specified.
2. Before removing the ECU, turn off the ignition switch.
3. If the standard values are not observed, check the
pins with other testers.
Check
Pin
No.
Circuit to be
tested
Ignition
Switch
Position
Engine
State
Unit
Scale/
Range
Measure
between
Pin No.
Standard Value
Note
22
P-GND
OFF
STOP
W
22, 47
Continuity : OK
46
GNDI
OFF
STOP
W
46, 47
Continuity : OK
47
GND 2
OFF
STOP
W
47, GND
Continuity : OK
31
4H SW
OFF
STOP
W
31, 47
No continuity
(high, 4L) : OK
44
4L SW
OFF
STOP
W
44, 47
No continuity
(high) and
continuity (4L) :
OK
42
AXLE SW
ON
RUN
W
42, 47
Continuity(TOD,
4L) : OK
Remove ECU connector and start
the engine. Move the vehicle forth
and back to connect axle surely.
29
DIAG
OFF
STOP
W
29 (TOD),
8 (DLC
Connec-
tor)
Continuity : OK
DLC connector terminal 8
7
IND.A
ON
STOP
DCV
7 (+), 47
(–)
8.0
∼
14.5 V
when the indicator lamp is turned
off.
20
CHECK
TOD
ON
STOP
DCV
20 (+), 47
(–)
8.0
∼
14.5 V
When the indicator lamp is turned
off.
33
ABS IN
ON
STOP
DCV
33 (+), 47
(–)
6.0
∼
11.0 V
12
REF
ON
STOP
DCV
12 (+), 47
(–)
5
∼
9 V
Connect ECU
32
FRT.(+)
ON
STOP
DCV
32 (+), 47
(–)
0.7
∼
6 V
Connect ECU and move the
vehicle (off one tooth of speed
sensor ring) making sure of
voltage change.
45
RR.(+)
ON
STOP
DCV
45 (+), 47
(–)
0.7
∼
6 V
Connect ECU and move the
vehicle (off one tooth of speed
sensor ring) making sure of
voltage change.
13
COM(-)
ON
STOP
DCV
13 (+), 47
(–)
0V
Connect ECU
14
VIG
ON
STOP
DCV
14 (+), 47
(–)
8
∼
14.5 V
34
VB
OFF
STOP
DCV
34 (+), 47
(–)
8.0
∼
14.5 V
37
BRAKE
SW
OFF
STOP
DCV
37 (+), 47
(–)
8
∼
14.5 V
Press brake pedal
15
TPS
ON
STOP
DCV
15 (+), 47
(–)
PWM duty cycle
10%(MAX) – 90
%(MIN)
Step on the accelerator pedal and
make sure that duty cycle
changes.