|
No.
|
TECH
1-DISPLAY
|
Conditions
for Checking
|
Nominal
Value
|
Trouble
Codes
|
Terminal
|
|
|
30
|
PRE
HEAT. IND.
|
Ignition OFF
Engine COLD
|
|
-
|
11,
16
|
|
|
|
|
Ignition ON
|
Preheater telltale is on for approx. 4 s, then off
again
|
|
|
|
|
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|
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|
|
|
after 4 s
|
INACTIVE
12V
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note:
See note for test step no. 28
|
(Preheater telltale off)
|
|
|
|
|
|
|
|
|
|
|
|
|
Trouble-shooting
|
Nominal Value
|
Cause of
Fault:
(If nominal
value is not attained)
|
|
|
· Ignition OFF
· Ignition ON
|
All telltales (oil level,
battery, ABS, engine, airbag) briefly ON
|
· Fuse F15 defective
· Circuit interruption or
short circuit to ground
from: wiring harness plug for switch S1 Ter. 15
to: wiring harness plug for instrument Ter. 21
· Strip conductor (on rear
of instrument) defective
|
|
|
|
|
|
|
|
· Ignition OFF
· Disconnect wiring harness
plug from DDE control unit K70
· Ignition ON
|
Preheater telltale H16 OFF
|
· Short circuit to ground
from: wiring harness plug for instrument strip conductor
Ter. 20
to: wiring harness plug for DDE control unit K70
Ter. 11
· Strip conductor (on rear
of instrument) defective
|
|
|
|
|
|
|
|
· Bridge wiring harness
plug for DDE control unit K70 with electrically fused jumper
from: wiring harness plug for DDE control unit K70 Ter. 11
to: ground
|
Preheater telltale H16 ON
|
· Short circuit to voltage
from: wiring harness plug for DDE control unit K70 Ter. 11
to: wiring harness plug for instrument Ter. 20
Note:
In this test, the fuse for the
electrically fused jumper is blown.
|
|
|
|
|
|
|
|
|
|
· Circuit interruption
from: wiring harness plug for DDE control unit K70 Ter. 11
to: wiring harness plug for strip conductor Ter. 20
· Strip conductor (on rear
of instrument) defective
· Preheater telltale H16 defective or
corroded contacts
|
|
|
|
|
|
|
|
· Ignition OFF
· Using multimeter, measure
resistance
from: wiring harness plug for DDE control unit K70 Ter. 18
or Ter. 19
to: ground
|
lower than 2 W
|
· Circuit interruption
from: wiring harness plug for DDE control unit K70 Ter. 18
or Ter. 19
to: ground
|
|
|
|
|
|
|
|
|
If nominal values are attained
|
· DDE control unit K70
defective
|
|
|
|
|
|
|
|
Actuator test see section 5.8
"Table 5, Digital Diesel Electronics DDE 2.1 F5:ACTUATOR TEST" test
step no. 06 PRE HEAT. IND.
|
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