T8 / P2176 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general) Cruise control not working. Limp home

P2176 00

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

Cruise control not working.

Limp home

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Turn Ignition On

Engine not running.

Fault criteria:

Each time the control module is activated, it closes the damper completely in order to learn the lowest value. If the control module does not detect any damper movement, it determines that the damper is stuck due to impurities or ice. The control module emits a variable closing PWM for a duration of 2 s. If no motion is then detected, a DTC is generated.

Dependent:

None

System reaction to a fault:

Correction of mass air flow/combustion for fuel calculation is blocked.

Limited acceleration and idle function.

Cruise control blocked.

Secondary air switched off.

OK report:

Fault criteria NOT fulfilled.

Fault handling:

Type III

(See section Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:

•	Throttle Position Sensor 1

•	Throttle Position Sensor 2

Activation:

•	Throttle Position Test

(See also description of readings/activations in diagnostic tool)