Opel Frontera UBS. Service manual — part 147
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–40
Check flow
Trouble code
Phenomenon
Standard
6
13
The reference is short-circuited to
GND.
Reference
]
5 V
15
The reference Vb is short-circuited.
If the reference wire (15) is short-circuited to GND, the
speed signal is not generated. If the wire is short-circuited
to the battery voltage, the signal level becomes faulty.
D04RW061
4B2–41
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Start the engine.
Does the voltage between terminals 15 and 19 meet the standard
5V?
Go to Step 8
Go to Step 2
2
Is the voltage below the standard?
Go to Step 3
Go to Step 7
3
1. Turn off the starter switch.
2. Disconnect the ECU connector.
Is the continuity established between vehicle harness terminals
(B–67)7 and (B–67)11?
Go to Step 4
The ECU is
failed. Replace
the ECU.
Go to Step 8
4
1. Disconnect the H-49 connector.
Is the continuity established between floor harness connector
terminals (H-49)3 and (H-49)9?
Go to Step 5
Go to Step 6
5
1. Disconnect the A–3 connector.
Is the continuity established between transfer harness connector
terminals (A–3)2 and (A–3)7?
Replace the front
speed sensor.
Go to Step 8
The reference
harness for the
front speed
sensor is
short–circuited to
GND. Repair the
circuit.
Go to Step 8
6
1. Disconnect the A–3 connector.
Is the continuity established between transfer harness connector
terminals (A–3)1 and (A–3)7?
Replace the rear
speed sensor.
Go to Step 8
The reference
harness for the
rear speed
sensor is
short–circuited to
GND. Repair the
circuit.
Go to Step 8
7
1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.
Is the battery voltage observed between harness connector
terminals (B–67)7 and (B–67)11?
Repair the
harness circuit.
Go to Step 8
The ECU has
failed. Replace
the ECU.
Go to Step 8
8
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
Repeat the
“Diagnosis Flow”
Go to Step 8
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–42
Check flow
Trouble code
Phenomenon
Standard
7
21
The voltage of the throttle position
sensor (TPS) is faulty.
The signal voltage from the TPS deviates from the stan-
dard range.
D04RW056
4B2–43
DRIVE LINE CONTROL SYSTEM (TOD)
Step
Action
Yes
No
1
1. Turn off the starter switch.
Is the battery voltage normal?
Go to Step 2
Charge or
replace the
battery.
Go to Step 6
2
1. Turn on the starter switch.
Does the voltage between terminals 21 and 19 fall within the
standard range above?
Go to Step 6
Go to Step 3
3
1. Turn off the starter switch.
2. Disconnect the ECU connector.
3. Turn on the starter switch.
Does the voltage between terminals (B–68)9 and (B–67)11 fall
within the standard range above?
The ECU has
failed. Replace
the ECU.
Go to Step 6
Go to Step 4
4
Is the harness healthy?
Go to Step 5
Repair the
harness.
Go to Step 6
5
Is the TPS healthy?
Go to Step 6
Replace the TPS.
Go to Step 6
6
1. Check that all the parts are mounted.
2. Clear the trouble code.
Is this step complete?
Repeat the
“Diagnosis Flow”.
Go to Step 6
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