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No.
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System Components
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Fault Symptoms
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Nominal Value
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Trouble Codes
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Terminal
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01
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FUEL FILTER HEATING
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Engine starts poorly in both warm and cold conditions
(although the starter turns)
Engine speed does not increase when cold
Mist-like white smoke emissions in full load operation
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-
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-
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-
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Trouble-shooting
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Nominal Value
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Cause of Fault:
(If nominal value is not
attained)
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· Disconnect both wiring harness plugs
from filter heating U12 (wiring harness plug 1: cable colours SW 0.5 and GRWS
0.5; wiring harness plug 2: cable colours SW 2.5 and BR 2.5)
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· Ignition OFF
· Using multimeter, measure voltage
from: wiring
harness plug 1 for filter heating U12 Ter. 1 (cable colour SW 0.5)
to: ground
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lower than 0.1 V
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· Fuse F15 defective
· Short circuit to voltage
from: wiring
harness plug 1 for filter heating U12 Ter. 1 (cable colour SW 0.5)
to: wiring
harness plug for switch S1 Ter. 15
to: base
of park/neutral signal relay K13 Ter. 4 or Ter. 2
|
|
· Ignition ON
· Using multimeter, measure voltage
from: wiring
harness plug 1 for filter heating U12 Ter. 1 (cable colour SW 0.5)
to: ground
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greater than 11 V
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· Short circuit to ground/circuit
interruption
from: wiring
harness plug 1 for filter heating U12 Ter. 1 (cable colour SW 0.5)
to: wiring
harness plug for switch S1 Ter. 15
· Short circuit to ground
from: wiring
harness plug for switch S1 Ter. 15
to: base
of park/neutral signal relay K13 Ter. 4 or Ter. 2
|
|
· Ignition OFF
· Using multimeter, measure resistance
from: wiring
harness plug 1 for filter heating U12 Ter. 2 (cable colour GRWS 0.5)
to: ground
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60 to 70 W
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Resistance lower than 60 W:
· Short circuit to ground
from: wiring
harness plug 1 for filter heating U12 Ter. 2 (cable colour GRWS 0.5)
to: base
of filter heating relay K80 Ter. 6
· Relay K80 defective
· Fault in starter circuit
|
|
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Resistance greater than 70 W
· Circuit interruption
from: wiring
harness plug 1 for filter heating U12 Ter. 2 (cable colour GRWS 0.5)
to: base
of filter heating relay K80 Ter. 6
· Circuit interruption
from: base
of filter heating relay K80 Ter. 2
to: wiring
harness plug for starter M1 Ter. 30H
· Filter heating relay K80 defective
· Fault
in starter circuit
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· Ignition OFF
· Using multimeter, measure resistance
from: wiring
harness plug 2 for filter heating U12 Ter. 2 (cable colour BR 2.5)
to: ground
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lower than 2 W
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· Circuit interruption
from: wiring
harness plug 2 for filter heating U12 Ter. 2 (cable colour BR 2.5)
to: ground
|
|
· Ignition ON
· Using multimeter, measure voltage
from: wiring
harness plug 2 for filter heating U12 Ter. 1 (cable colour SW 2.5)
to: ground
|
lower than 0.1 V
|
· Short circuit to voltage
from: wiring
harness plug 2 for filter heating U12 Ter. 1 (cable colour SW 2.5)
to: base
of filter heating relay K80 Ter. 8
· Short circuit to voltage
from: wiring
harness plug 1 for filter heating U12 Ter. 2 (cable colour GRWS 0.5)
to: base
of filter heating relay K80 Ter. 6
· Filter heating relay K80 defective
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· Ignition ON
· Bridge wiring harness plug for filter
heating U12
from: wiring
harness plug 1 for filter heating U12 Ter. 2 (cable colour GRWS 0.5)
to: battery
positive terminal Ter. 30
· Using multimeter, measure voltage
from: wiring
harness plug 1 for filter heating U12 Ter. 1 (cable colour SW 2.5)
to: ground
|
greater than 11 V
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· Short circuit to ground/circuit
interruption
from: wiring
harness plug 2 for filter heating U12 Ter. 1 (cable colour SW 2.5)
to: base
of filter heating relay K80 Ter. 8
· Filter heating relay K80 defective
· Fuse F36 defective
· Short circuit to ground/circuit
interruption
from: base
of filter heating relay K80 Ter. 4
to: battery
positive terminal Ter. 30
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If nominal values are attained
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· Filter heating U12 defective
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