Opel Frontera UBS. Service manual — part 152
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–60
Step
Action
Yes
No
1
Turn on the starter switch.
Is the battery voltage observed between terminals 1 and 19?
The ECU has
failed. Replace
the ECU.
Go to Step 2
Check the battery
circuit.
Go to Step 2
2
Check that all the parts are mounted.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Go to Step 2
4B2–61
DRIVE LINE CONTROL SYSTEM (TOD)
Chart B–1
The 4WD switch circuit wires are broken or short-circuited to the GND
Function of circuit
—
Fail condition
Even after the transfer mode is selected from TOD to 2H, the indicator lamp status is not
changed.
Indicator lamp status
—
Transfer position
2H
—
D04RW062
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–62
Step
Action
Yes
No
1
1. Turn on the starter switch.
When the 4WD SW is selected to the 4WD position, is 0 V
observed between terminal 12 and 19?
Go to Step 2
Repair the 4WD
SW circuit.
Go to Step 4
2
When the 4WD SW is selected to the 2WD position, is 12 V
observed between terminals 12 and 19?
Go to Step 3
Repair the 4WD
SW circuit.
Go to Step 4
3
When the transfer lever is shifted to the 4L position, is battery
boltage observed between terminals 28 and 19?
The phenomenon
is not
reproduced.
Refer to
“Troubles
intermittently
observed”.
Go to Step 4
Replace the
ECU.
Go to Step 4
4
Check that all the parts are mounted.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Return to Step 4
4B2–63
DRIVE LINE CONTROL SYSTEM (TOD)
Chart B–2
The 4WD switch circuit is short to battery.
Function of circuit
—
Fail condition
Even after the transfer mode is selected from 2H to TOD, the indicator lamp status dose
not change.
Indicator lamp status
Transfer position
TOD
D04RW062
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