Opel Frontera UBS. Service manual — part 1973
4B2–39
DRIVE LINE CONTROL SYSTEM (TOD)
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
Multimeter
Scale/
Range
Measure
between Pin
Number
Standard Valve
Note
14
D-G MAP
OFF
STOP
W
14, 19
Continuity : OK
(Gasoline)
No continuity : OK
(Diesel)
20
P-GND
OFF
STOP
W
20, 19
Continuity : OK
19
GND
OFF
STOP
W
19, GND
Continuity : OK
8
4H SW
OFF
STOP
W
8, 19
No continuity (high,
4L) and continuity
(N) : OK
9
4L SW
OFF
STOP
W
9, 19
No continuity (high)
and continuity (4L,
N) : OK
10
AXLE SW
ON
RUN
W
10, 19
Continuity : OK
Remove ECU and start the engine. Move
the vehicle forth and back to connect axle
surely.
13
DIAG
OFF
STOP
W
13 (TOD), 8
(DLC
Connector)
Continuity : OK
DLC connector terminal 8
25
IND.a
ON
STOP
DCV
25 (+), 19 (–)
8.0
∼
14.5 V
When the indicator lamp is turned off.
26
IND.b
ON
STOP
DCV
26 (+), 19 (–)
8.0
∼
14.5 V
When the indicator lamp is turned off.
27
IND.c
ON
STOP
DCV
27 (+), 19 (–)
8.0
∼
14.5 V
When the indicator lamp is turned off.
30
CHECK
LAMP
ON
STOP
DCV
30 (+), 19 (–)
8.0
∼
14.5 V
When the indicator lamp is turned off.
11
ABS IN
ON
STOP
DCV
11 (+), 19 (–)
11.5
∼
14.5 V
15
Ref.
ON
STOP
DCV
15 (+), 19 (–)
5
∼
9 V
Connect ECU
24
Ft.(+)
ON
STOP
DCV
24 (+), 19 (–)
0.7
∼
6 V
Connect ECU (off one tooth of speed
sensor ring) and move the vehicle making
sure of voltage change.
23
Rr.(+)
ON
STOP
DCV
23 (+), 19 (–)
0.7
∼
6 V
Connect ECU (off one tooth of speed
sensor ring) and move the vehicle making
sure of voltage change.
18
COM(-)
ON
STOP
DCV
18 (+), 19 (–)
0V
Connect ECU
1
Vig
ON
STOP
DCV
1 (+), 19 (–)
8
∼
14.5 V
7
BRAKE
OFF
STOP
DCV
7 (+), 19 (–)
8
∼
14.5 V
Press brake pedal
21
TPS
ON
STOP
DCV
21 (+), 19 (–)
0.2
∼
4.6 V
Step on the accelerator pedal and make
sure that voltage changes.
3
4WD OUT
OFF
STOP
W
3, 19
7
∼
12 k
W
Disconnect battery GND terminal
5
ADC(+)
OFF
STOP
W
5, 19
10
∼
30
W
Disconnect battery GND terminal
4
SOL(+)
OFF
STOP
W
4, 19
1.0
∼
5.0
W
Disconnect battery GND terminal
12
4WD SW
ON
STOP
DCV
12 (+), 19 (–)
SW OFF : 0 V
SW ON : 8.0
∼
14.5 V
SW OFF : Contact point open
SW ON : Contact point close
6
LIGHTING
ON
STOP
DCV
6 (+), 19 (–)
SW OFF : 8.0
∼
14.5
V
SW ON : 0 V
28
AUTO INDI
ON
STOP
DCV
28 (+), 19 (–)
TOD : 0 V
2H & 4L : 8.0
∼
14.5
V
Connect ECU
29
RR INDI
ON
STOP
DCV
29 (+), 19 (–)
0 V
Connect ECU. When the indicator lamp is
turned on.
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–40
Tech 2 Scan Tool
From 98 MY, Isuzu dealer service departments are
recommended to use Tech 2. Please refer to Tech 2 scan
tool user guide.
901RW180
Legend
(1) PCMCIA Card
(2) RS 232 Loop Back Connector
(3) SAE 16/19 Adaptor
(4) DLC Cable
(5) Tech–2
4B2–41
DRIVE LINE CONTROL SYSTEM (TOD)
Getting Started
D
Before operating the Isuzu PCMCIA card with the
Tech 2, the following steps must be performed:
1. The Isuzu 00 System PCMCIA card (1) inserts into
the Tech 2 (5).
2. Connect the SAE 16/19 adapter (3) to the DLC cable
(4).
3. Connect the DLC cable to the Tech 2 (5)
4. Mark sure the vehicle ignition is off.
5. Connect the Tech 2 SAE 16/19 adapter to the vehicle
ALDL/DLC connector.
810RW308
6. The vehicle ignition turns on.
7. Verify the Tech 2 power up display.
060RW009
NOTE: The RS232 Loop back connector is only to use for
diagnosis of Tech 2 and refer to user guide of the Tech 2.
Operating Procedure
The power up screen is displayed when you power up the
tester with the Isuzu systems PCMCIA card. Follow the
operating procedure below.
060RY027
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–42
060RY00269
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