Opel Frontera UBS. Service manual — part 151
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–56
Check flow
Trouble code
Phenomenon
Standard
14
25
The CHECK lamp indicator line is
short–circuited to the battery.
—
35
The line is broken or short–circuited
to GND.
—
D04RW058
4B2–57
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Turn on the starter switch.
Is the CHECK lamp always turned on?
Go to Step 2
Go to Step 3
2
1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.
Is the CHECK lamp always turned on?
The CHECK
circuit is
short-circuited to
GND. Repair the
circuit.
Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 7
3
Turn on the starter switch.
Is the CHECK lamp always turned off?
Go to Step 4
Go to Step 6
4
Turn on the starter switch.
Is the battery voltage observed between terminals 30 and 19?
Go to Step 5
The CHECK
circuit wires are
broken or the
CHECK lamp is
failed. Repair the
circuit.
Go to Step 7
5
Turn off the starter switch.
Is the battery voltage observed between terminals 30 and 19?
The battery is
short–circuited.
Repair the
CHECK lamp
circuit.
Go to Step 7
The ECU has
failed. Replace
the ECU.
Go to Step 7
6
Turn on the starter switch.
Does the CHECK lamp go off two seconds after?
The phenomenon
is not reproduced
Refer to
“Troubles
intermittently
observed”.
Go to Step 7
Go to Step 7
7
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Return to Step 7
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–58
Trouble Diagnosis Depending on The
Status of TOD Indicator
Functional check with TOD indicator light is conducted
prior to check on Charts A–H.
D
After the starter is switched on, check and see if the
status has become as tabulated below.
C07RW012
D
If the status is as tabulated above, there is no
problem. If not as tabulated above, inspect the
harness.
4B2–59
DRIVE LINE CONTROL SYSTEM (TOD)
Chart A
Indicator drive circuit
Function of circuit
The circuit informs the indicator of the working condition of the ECU.
Fail condition
All the TOD indicator lamps and CHECK lamp are lit, and go off momentarily at an inter-
val of about two seconds.
Indicator lamp status
—
Transfer position
TOD, 4L
—
D04RW062
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