1998 OPEL FRONTERA Workshop Manual

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Page 4177 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–94
Chart D–2The 4L switch circuit is short-circuited to GND.
Function of circuit—
Fail conditionThe 4L mode is displayed even in the 2H or TOD.
Indicator lamp

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OPEL FRONTERA 1998 Workshop Manual 4B2–95 DRIVE LINE CONTROL SYSTEM (TOD)
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Page 4179 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–96
StepActionYe sNo
1When the transfer lever is shifted to the high position, is 5V
observed between terminals 9 and 19 (4L switch)?
Go to Step 2Go to

DRIVE LINE CONTROL SYSTEM (TOD) 4B2–96
StepActionYe sNo
1When the transfer lever is shifted to the high position, is 5V
observed between terminals 9 and 19 (4L switch)?
Go to Step 2Go to Step 7
2When the transfer lever is shifted to the neutral position, is 0V
observed between terminals 9 and 19 (4L switch)?
Go to Step 3Go to Step 7
3When the transfer lever is shifted to the 4L position, is 0V
observed between terminals 9 and 19 (4L switch)?
Go to Step 4Go to Step 7
41. Shift the 4WD AUTO SW to the 2H position.
Is 12V observed between terminals 25 and 19?
Go to Step 5
The ECU has
failed. Replace
the ECU.
Go to Step 16
5Is 12V observed between terminals 26 and 19?
Go to Step 6
The ECU has
failed. Replace
the ECU.
Go to Step 16
6Is 12V observed between terminals 27 and 19?The phenomenon
is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
The ECU has
failed. Replace
the ECU.
Go to Step 16
71. Turn off the starter switch.
2. Disconnect the ECU connector.
When the transfer lever is shifted to the neutral position between
High and 4L, is the continuity established between terminals
(B–68)4 and (B–67)11?
Go to Step 8Go to Step 10
8When the transfer lever is shifted to the 4L position, is the
continuity established between terminals (B–68)4 and (B–67)11?
Go to Step 9Go to Step 10
9When the transfer lever is shifted to the high position, is the
continuity established between terminals (B–68)4 and (B–67)11?
Go to Step 10
The ECU has
failed. Replace
the ECU.
Go to Step 16
101. Disconnect the H-49 connector.
When the transfer lever is shifted to the neutral position between
high and 4L, is the continuity established between terminals
(H-49)5 and (B-67)11?
Go to Step 11Go to Step 13
11When the transfer lever is shifted to the 4L position, is the
continuity established between transfer connector terminals
(H-49)5 and (B-67)11?
Go to Step 12Go to Step 13
12When the transfer lever is shifted to the high position, is the
continuity established between terminals (H-49)5 and (B-67)11?
Go to Step 13
GND is
short-circuited
between
terminals (B–68)4
and (H-49)5.
Repair the circuit.
Go to Step 16
131. Disconnect the A-3 connector.
When the transfer lever is shifted to the neutral position between
high and 4L, is the continuity established between terminals
(A-3)12 and GND?
Go to Step 14
Repair the
transfer
assembly.
Go to Step 16
14When the transfer lever is shifted to the 4L position, is the
continuity established between terminals (A-3)12 and GND?
Go to Step 15
Repair the
transfer
assembly.
Go to Step 16

Page 4180 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–97 DRIVE LINE CONTROL SYSTEM (TOD)
StepNo Ye s Action
15When the transfer lever is shifted to the high position, is the
continuity established between terminals (A-3)12 and GND?
Repai

Page 4181 of 6000

OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–98
Chart E–1AXLE switch circuit wires are broken.
Function of circuit—
Fail conditionBoth the TOD and 4L modes are disabled. (The transition status is not rem

Page 4182 of 6000

OPEL FRONTERA 1998 Workshop Manual 4B2–99 DRIVE LINE CONTROL SYSTEM (TOD)
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OPEL FRONTERA 1998 Workshop Manual DRIVE LINE CONTROL SYSTEM (TOD) 4B2–100
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OPEL FRONTERA 1998 Workshop Manual 4B2–101 DRIVE LINE CONTROL SYSTEM (TOD)
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