Volvo TAD1240GE Operator's Manual page 52

Diagnostic function
Code 2.8
Cause: Throttle potentiometer connected to CIU.
Response: The engine goes to idle. If the pedal is first re-
leased and then pushed down again the engine can be
operated on an emergency basis with the help of the idle
switch. (TAD1240-42GE)
Corrective action:
•
Check that the potentiometer is connected correctly.
•
Check that the wiring to the potentiometer is not
damaged.
•
Check the potentiometer.
Code 3.1
Cause: Oil pressure sensor.
Response: None.
Corrective action:
•
Check that the wiring to the sensor is not damaged.
•
Check that the sensor is connected correctly.
Code 3.2
Cause: Intake air temperature sensor.
Response: None.
Corrective action:
•
Check that the sensor connector is engaged correctly.
•
Check the wiring to the sensor.
•
Check that the sensor is mounted correctly.
•
Check that the sensor is functional.
Code 3.3
Cause: Coolant temperature sensor.
Response: Pre-heating is activated even if the engine is
warm.
Corrective action:
•
Check that the sensor connector is engaged correctly.
•
Check the wiring to the sensor.
•
Check that the sensor is mounted correctly.
•
Check that the sensor is functional.
50
Code 3.4
Cause: Charge air sensor.
Response: The engine smokes more than it usually does
when accelerating/under loading.
Corrective action:
•
Check that the wiring to the sensor is not damaged.
•
Check that the sensor is functional.
•
Check that the sensor is mounted correctly.
•
Check that the sensor is functional.
Code 3.7
Cause: Oil temperature sensor.
Response: None.
Corrective action:
•
Check that the wiring to the sensor is not damaged.
•
Check that the sensor is connected correctly.
Code 4.1
Cause Oil pressure warning lamp.
Response: Warning lamp does not function.
The diagnosis is activated if a circuit interruption is
detected during start-up.
Corrective action:
•
arning lamp
Check the w
•
Check the wiring and connection to the w
lamp
.
Code 4.2
Cause: Warning lamp high coolant temperature.
Response: None.
Corrective action:
•
arning lamp
Check that the w
•
arning lamp
Check the w
•
Check the wiring and connection to the w
lamp
.
.
arning
is correctly mounted.
for run-indication.
arning