|
No.
|
Multimeter
MKM - 587 - A
|
Test of
|
Notes
|
Nominal
Values
|
Possible Cause of Fault,
Trouble-shooting
|
|
|
1
|
Ohmmeter
|
Diagnostic
plug (ALDL):
ground
|
(A)/ground
|
Ignition
OFF
|
approx.
0 W
|
· Transfer
resistance at grounding point too high
|
|
|
2
|
Voltmeter
range: 20 V DC
|
Diagnostic
plug (ALDL):
excitation lead
|
(B)/ground
|
Ignition
ON
|
> 11.5 V
|
· Lead interruption
between
X 13/Ter. B and K 61 /Ter. 13
· Control unit
defective
|
|
|
3
|
Voltmeter
range: 20 V
DC
|
Diagnostic
plug (ALDL):
voltage supply
|
(F)/ground
|
Ignition
ON
|
> 11.5 V
|
· Battery voltage
too low
· Lead interruption
between
X 13/Ter. F and voltage supply
|
|
|
4
|
Voltmeter
range: 20 V DC
|
Diagnostic plug (ALDL)
data lead
|
(G)/ground
|
Ignition
ON
|
>9 V
|
· Lead interruption
between
X 13 Ter. G and K 61/Ter. 55
· Control unit
defective
|
|
|
5
|
-
|
Telltale
H 30
(ALDL):
ground
|
-
|
Ignition
ON
|
TelltaleON
|
· Telltale H 30
defective
· Fuse F 7 defective
· Lead interruption
between
H 30 and K 61/Ter. 22
· Control unit K 61
defective
|
|
|
6
|
-
|
TECH 1
self-test
|
-
|
See
TECH 1
Operating
Instruc-
tions
|
-
|
-
|
|
|
|
Note: After
test steps 7 and 8, any trouble codes that are stored are deleted.
|
|
7
|
Ohmmeter
|
Control unit
plug K 61 ground
|
Ter.2/
ground
Ter. 14/
ground
Ter.24/
ground
|
Ignition OFF
Disconect plug from control unit K 61
|
approx. 0 W
|
· Transfer
resistance at grounding point too high
· Lead interruption
between K 61 and grounding point
· Controlunit K 61
defective
|
|
|
8
|
Voltmeter
range: 20 V
DC
|
Control unit
plug K 61:
voltage supply
Ter. 30 and Ter. 50
|
Ter.18/
ground
Ter. 27/
ground
|
gnition OFF
Remove plug K 61
Ignition ON
|
> 11.5 V
|
· Battery voltage to
low
· Lead interruption
between
Ter. 30 or Ter. 15 and control unit K 61
· Controlunit K 61
defective
· Fuel pump relay K
68 defective
|
|
|
|
|
|
|
|
|
|
|
|
|
|
