|
No.
|
Checking
|
Conditions for Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
02
|
Fuel consumption signal
|
|
|
93
|
B12
|
|
|
|
|
|
|
|
|
Notes on
Trouble-shooting:
|
Nominal
Value:
|
Cause of
fault:
(If nominal
value is not attained)
|
|
· Ignition OFF
· Disconnect
wiring harness plug from:
16 Multi Info Display
· Using
multimeter, measure voltage
from: X20
wiring harness plug for MID Ter. 21
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: X20
wiring harness plug for MID Ter. 21
to: K57
wiring harness plug for engine control unit Ter. B12
· K57 control
unit defective
|
|
· Using
multimeter, measure resistance:
from: X20
wiring harness plug for MID Ter. 21
to: ground
|
lower than 2 W
|
· Short circuit
to ground
from: X20
wiring harness plug for MID Ter. 21
to: K57
wiring harness plug for engine control unit Ter. B12
· K57 control
unit defective
|
|
· Disconnect
wiring harness plug from:
57 engine control unit
· Using
multimeter, measure resistance:
from: X20
wiring harness plug for MID Ter. 21
to: K57
wiring harness plug for engine control unit Ter. B12
|
lower than 2 W
|
· Circuit
interruption
from: X20
wiring harness plug for MID Ter. 21
to: K57
wiring harness plug for engine control unit Ter. B12
|
|
|
If nominal values are attained
|
· U16 Multi Info
Display defective
· K57 control
unit defective
|
|
· Using
multimeter, measure voltage:
from: X13
diagnostic plug Ter. A
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: X13
diagnostic plug Ter. A
to: battery
+, Ter. 30
|
|
· Using
multimeter, measure voltage
from: X13
diagnostic plug Ter. F
to: ground
|
higher than 11 V
|
· Short circuit
to ground or circuit interruption
from: X13
diagnostic plug Ter. F
to: ground
|
|
· Using
multimeter, measure voltage:
from: X13
diagnostic plug Ter. F
to: X13
diagnostic plug Ter. A
|
higher than 11 V
|
· Short circuit
to ground or circuit interruption
from: X13
diagnostic plug Ter. A
to: ground
|
|
· Carry out
TECH 1 self- test according to Operating Instructions
|
TECH 1 OK
|
· See TECH 1
Operating Instructions
|
|
· Check all
affected fuses (see corresponding excerpt from circuit diagram)
|
|
|
|
Note:
The following measurements are performed with the engine
control unit wiring harness plug attached. The relevant terminals are
connected to the measurement leads of the multimeter from behind, i.e. wiring
harness side, using the appropriate adapters from Electronic Kit KM- 609.
|
|
· Ignition OFF
· Using
multimeter, measure voltage
from: K57
wiring harness plug for engine control unit Ter. A6
to: ground
|
higher than 11 V
|
· Short circuit
to ground or circuit interruption
from: K57
wiring harness plug for engine control unit Ter. A6
to: battery
+, Ter. 30
|
|
· Using
multimeter, measure voltage
from: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16,
F3, E16
to: ground
|
lower than 0.1 V
|
· Short circuit
to voltage
from: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16,
F3, E16
to: battery
+, Ter. 30
|
|
· Ignition ON
· Using
multimeter, measure voltage
from: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16
to: ground
|
lower than 0.1 V
|
· Short circuit
to ground
from: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16
to: S1
ignition lock Ter. 15
|
|
· Using
multimeter, measure voltage
from: K57
wiring harness plug for engine control unit Ter. F3, E16
to: ground
|
higher than 11 V
|
· Short circuit
to ground or circuit interruption
from: K57
wiring harness plug for engine control unit Ter. F3, E16
to: S1
ignition lock Ter. 15
· S1 ignition
lock defective
|
|
· Using
multimeter, measure voltage:
from: K57
wiring harness plug for engine control unit Ter. F3, E16
to: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16
|
higher than 11 V
|
· Circuit
interruption
from: K57
wiring harness plug for engine control unit Ter. B1, E7, E9, F7, F16
to: ground
|
|
· Using
multimeter, measure voltage:
from: X13
diagnostic plug Ter. B
to: ground
|
higher than 10 V
|
· Circuit
interruption
from: K57
wiring harness plug for engine control unit Ter. B9
to: X13
diagnostic plug Ter. B
· Short circuit
to ground
from: K57
wiring harness plug for engine control unit Ter. F7
to: X13
diagnostic plug Ter. B
· K57 engine
control unit defective
|
|
· Bridge X13
diagnostic plug
from: X13
diagnostic plug Ter. B
to: ground
|
Trouble code readout via H30, engine telltale
|
· Short circuit
to voltage
from: X13
diagnostic plug Ter. B
to: K57
wiring harness plug for engine control unit Ter. F7
· K57 engine
control unit defective
|
|
· Ignition OFF
· Disconnect
TECH 1 from:
X13 diagnostic plug
· Disconnect
wiring harness plugs from:
All control units that are connected to X13 diagnostic
plug Ter. G
|
|
|
|
· Using
multimeter, measure resistance:
from: X13
diagnostic plug Ter. G
to: K57
wiring harness plug for engine control unit Ter. F11
|
lower than 2 W
|
· Circuit
interruption
from: X13
diagnostic plug Ter. G
to: K57
wiring harness plug for engine control unit Ter. F11
|
|
· Using
multimeter, measure resistance:
from: X13
diagnostic plug Ter. G
to: ground
|
higher than 100 kW (¥)
|
· Short circuit
to ground
from: X13
diagnostic plug Ter. G
to: K57
wiring harness plug for engine control unit Ter. F11
· K57 engine
control unit defective
|
|
· Ignition ON
· Using
multimeter, measure voltage:
from: X13
diagnostic plug Ter. G
to: ground
|
lower than 0,1 V
|
Short circuit to voltage
from: X13
diagnostic plug Ter. G
to: K57
wiring harness plug for engine control unit Ter. F11
|
|
|
If nominal values are attained
|
· K57 engine
control unit defective
|
|
|
|
|
|
|
|
|
|
|
|
|
