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Test
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Test
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Check
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Notes
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Nominal
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Possible Cause of Fault,
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Step
|
Equipment
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Value
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Trouble-shooting
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| |
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Multimeter
|
of
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between
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| |
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MKM-587-A
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| 1 |
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Voltmeter,
range
20
V, DC
|
Voltage
supply, ultrasonic sensor P53
|
|
|
· Disconnect wiring harness plugs from ultrasonic sensors P53 and
P54
|
|
· Wiring harness, interruption/short circuit
from: P53/Ter. 2
to: K94/Ter. 5
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|
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P53/
Ter. 2
|
P53/
Ter. 3
|
· Measure at wiring harness plug P53 (left)
|
5
to
8
V
|
· Wiring harness, interruption/short circuit
from: P53/Ter. 3
to: K94/Ter. 7
· Control unit K94 defective
|
|
| 2 |
|
Voltmeter,
range
20
V, DC
|
Voltage
supply, ultrasonic sensor P54
|
|
|
· Disconnect wiring harness plugs from ultrasonic sensors P53 and
P54
|
|
· Wiring harness, interruption/short circuit
from: P54/Ter. 2
to: K94/Ter. 5
|
|
|
|
|
|
P54/
Ter. 2
|
P54/
Ter. 3
|
· Measure at wiring harness plug P54 (left)
|
5
to
8
V
|
· Wiring harness, interruption/short circuit
from: P54/Ter. 3
to: K94/Ter. 7
· Control unit K94 defective
|
|
| 3 |
|
Ohmmeter,
range
200
W
|
Signal
lead, ultrasonic sensor P53
|
P53/
Ter. 1
|
K94/
Ter. 8
|
· Disconnect wiring harness plug from ultrasonic sensor P53
|
approx.
0 W
|
· Wiring harness, interruption
from: P53/Ter. 1
to: K94/Ter. 8
|
|
|
|
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|
P53/
Ter. 4
|
K94/
Ter. 10
|
· Disconnect wiring harness plug from control unit K94
· Measure at wiring harness plugs P53 (left) and K94
|
approx.
0 W
|
· Wiring harness, interruption
from: P53/Ter. 4
to: K94/Ter. 10
|
|
| 4 |
|
Ohmmeter,
range
200
W
|
Signal
lead, ultrasonic sensor P54
|
P54/
Ter. 1
|
K94/
Ter. 9
|
· Disconnect wiring harness plug from ultrasonic sensor P54
|
approx.
0 W
|
· Wiring harness, interruption
from: P54/Ter. 1
to: K94/Ter. 9
|
|
|
|
|
|
P54/
Ter.
4
|
K94/
Ter. 11
|
· Disconnect wiring harness plug from control unit K94
· Measure at wiring harness plugs P54 (right) and K94
|
approx.
0 W
|
· Wiring harness, interruption
from: P54/Ter. 4
to: K94/Ter. 11
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