P1637

100210 - P1637

Information saved in
DME

Fault code
100210 - P1637

Fault text
Throttle-valve actuator, position monitoring: positional
variation

Fault description
The diagnostic function monitors the difference between
specified and actual throttle-valve values. If this figure
remains too high for a specified period, a fault is recognized
and the throttle valve is deactivated.

Condition for fault identification
Test condition:
The diagnostic fault code is logged when the difference
between the specified and the actual value is greater than the
characteristic curve over throttle-valve gradient (4% - 50%
).
Potential problem source(s):
- Stiction in throttle valve
- Defect in wiring harness between throttle-valve actuator
motor and DME
- Defective throttle-valve actuator motor
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Active control signal to throttle valve

Condition for fault memory entry
This fault is logged in the control module's fault memory immediately.

Action in service
- Check wiring harness between DME and throttle valve
- Use tester to activate throttle valve and observe its reaction
- Check throttle valve for contamination and foreign objects
- Move throttle valve by hand, checking for resistance to
motion and noting how quickly it closes when released
- Replace throttle-valve actuator motor

Fault effect and breakdown warning
Breakdown notice:
Ability to continue driving is restricted because engine
speed is limited to roughly 1300 rpm.
Possible apparent symptoms:
- Reduced power

Driver information
Warning light:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: on
- CC message: on
- US emissions warning lamp: on
- US electronic engine power reduction: on
- CC message: on

Service instruction
none