|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
12
|
A
/ C COMPRESS. SW
|
Ignition ON
|
INACTIVE
|
0V
|
40,
19
|
|
|
|
Engine running at idle speed,
operating temperature
Vehicles with AC:
|
INACTIVE 0V
|
|
|
|
|
|
AC switch ON
Note:
Vehicle interior should be warm,
set temperature switch to "COLD" and ventilation to full load; In
some vehicles, it is necessary to accelerate briefly or to wait for a while
until the compressor has built up pressure and switches
|
ACTIVE 12V
|
|
|
|
|
|
Vehicles without AC:
|
INACTIVE 0V
|
|
|
|
Notes on Trouble - shooting:
|
Nominal Value:
|
Cause of Fault:
|
|
Vehicles with AC:
· Ignition OFF
· Using multimeter, check from Motronic +
auxiliary plug X 30 / Ter. 4 to control unit K 61 / Ter. 41 for passage
|
approx. 0 W
|
· Short circuit or wiring harness
interruption from Motronic + auxiliary plug X 30 / Ter. 4
· Engine speed relay K 60 defective
|
|
· Using multimeter, check from Motronic +
auxiliary plug X 30 / Ter. 5 to engine speed relay K 60 / Ter. 85 (Ter. 6
relay socket) for passage
|
approx. 0 W
|
· Engine speed relay K 60 defective
· Short circuit or wiring harness
interruption from Motronic + auxiliary plug X 30 / Ter. 5 to relay K 60
|
|
· Using multimeter, check from Motronic +
auxiliary socket X 30 / Ter. 2 to control unit K 61 / Ter. 40 for passage
|
approx. 0
|
· Short circuit or lead interruption from
Motronic + auxiliary socket X 30 / Ter. 2 to control unit K 61 / Ter. 40
· Control unit K 61 defective
|
|
· Using multimeter, check from Motronic +
auxiliary socket X 30 / Ter. 2 to engine speed increase switch S 109 for
passage
|
approx. 0 W
|
· Engine speed increase switch S 109
defective
· Short circuit or wiring harness
interruption from Motronic + auxiliary X 30 / Ter. 2 to engine speed increase
switch S 109
· Air conditioning defective
|
|
|
|
|
|
|
|
|
