|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
04
|
TPS SIGNAL
|
Ignition ON
Start engine
Engine throttle valve CLOSED
(accelerator pedal in idle position)
|
0 to 1.5 %
0.3 to 1.0 V
|
21, 22
|
B 8,
A 8 /D 2
|
|
|
|
Engine throttle valve OPEN
(accelerator pedal fully depressed)
|
approx. 100 %
4.1 to 4.8 V
|
|
|
|
Trouble - shooting:
|
Nominal Value:
|
Cause of Fault:
(If nominal value is not attained)
|
|
· Ignition
OFF
Disconnect plugs from throttle valve
potentiometer P 34, intake manifold pressure sensor
P 23, exhaust gas recirculation valve Y 18 and exhaust gas
recirculation module V 15.
· Ignition
ON
· Measure
voltage:
from: wiring
harness plug P 34 Ter. C
to: ground
|
less than 0.1 V
|
· Short
circuit in wiring harness
from: throttle
valve potentiometer P 34 Ter. A (+ 5 volts)
to: throttle
valve potentiometer P 34 Ter. C (input)
|
|
· Ignition
OFF.
· Bridge
throttle valve potentiometer P 34:
from: wiring
harness plug Ter. A
to: wiring
harness plug Ter. C
· Ignition
ON
|
4.9 to 5.1 V
|
· Short
circuit in wiring harness
from: throttle
valve potentiometer P 34 Ter. B (ground)
to: throttle
valve potentiometer P 34 Ter. C (input)
from: throttle
valve potentiometer P 34 Ter. B
to: throttle
valve potentiometer P 34 Ter. A
· Lead
interruption
from: control
unit K 57 Ter. A 8 (input)
to: throttle
valve potentiometer P 34 Ter. C
from: control
unit K 57 Ter. B 8 (+ 5 volts)
to: throttle
valve potentiometer P 34 Ter. A
· Control
unit defective.
|
|
· Ignition
OFF
· Connect
intake manifold pressure sensor plug P 23
· Ignition
ON
|
4.9 to 5.1 V
|
· Fault
in circuit, intake manifold pressure sensor P 23
|
|
· Ignition
OFF
· Connect
coolant temperature sensor plug P 30
· Ignition
ON
|
4.9 to 5.1 V
|
· Fault
in circuit, coolant temperature sensor P 30
|
|
· Ignition
OFF
· Connect
exhaust gas recirculation valve plug Y 18
· Ignition
ON
|
4.9 to 5.1 V
|
· Fault
in circuit, exhaust gas recirculation valve Y 18
|
|
· Ignition
OFF
· Connect
exhaust gas recirculation module plug V 15
· Ignition
ON
|
4.9 to 5.1 V
|
· Fault
in circuit, exhaust gas recirculation module V 15
|
|
· Ignition
OFF
· Using
multimeter, measure resistance:
from: control
unit K 57 Ter. D 2
to: throttle
valve potentiometer P 34 Ter. B
|
less than 2 W
|
· Lead
interruption
from: control
unit K 57 Ter. D 2
to: throttle
valve potentiometer P 34 Ter. B
· Control
unit defective
|
|
· Check
plug P 34 for corrosion and moisture
|
|
· Moisture
in wiring harness
· Moisture
in potentiometer
|
|
· Ignition
OFF
· Using
multimeter, measure resistance:
from: throttle
valve potentiometer Ter. A
to: throttle
valve potentiometer Ter. B
|
Constant 4.0 to 9.0 kW
|
· Throttle
valve potentiometer defective
|
|
· Ignition
OFF
· Using
multimeter, measure resistance:
from: throttle
valve potentiometer Ter. B
to: throttle
valve potentiometer Ter. C
· Open
throttle valve slowly
|
closed: 1.0 to 3.0 kW
open: 5.0 to 10.0 kW
|
· Throttle
valve potentiometer defective
|
|
|
|
|
|
|
|
|
