|
· Ignition OFF
· Disconnect
wiring harness plug from:
P23 intake manifold pressure sensor
P29 intake air temperature sensor
· Ignition ON
· Using
multimeter, measure voltage:
from: P29 wiring harness plug for intake air
temperature sensor Ter. B
to: ground
|
4.9 to 5.1 V
|
· Short
circuit to voltage
(with measured value higher than 5.1 V) or
short circuit to ground/circuit interruption
(with measured value lower than 4.9 V)
from: K57 wiring harness plug for engine control unit
Ter. B4
to: P29 wiring harness plug for intake air
temperature sensor Ter. B
· K57 engine
control unit defective
|
|
· Bridge wiring
harness plug:
from: P29 wiring harness plug for intake air
temperature sensor Ter. A
to: P29 wiring harness plug for intake air
temperature sensor Ter. B
· TECH 1
data list no. 08 INTAKE AIR TEMP.
|
higher than 145°C/293 °F
lower than 0.1 V
|
· Circuit
interruption
from: P29 wiring harness plug for intake air
temperature sensor Ter. A
to: K57 wiring harness plug for engine control
unit Ter. F15
· K57 engine
control unit defective
|
|
· Using
multimeter, measure resistance:
from: P29 intake air temperature sensor Ter. A
to: P29 intake air temperature sensor Ter. B
|
Temperature Resistance
[°C] [kW]
0 approx. 9.5
20 approx. 3.6
40 approx. 1.5
80 approx. 0.3
|
· P29 intake air
temperature sensor defective
|
