Manufacturer Code Charts: 100101

100101 - P1639

Information saved in
DME

Fault code
100101 - P1639

Fault text
Throttle valve, function: jammed permanently

Fault description
The diagnostic function monitors the throttle valve's PWM
signal and recognizes this when the throttle valve sticks.

Condition for fault identification
Test condition:
The fault is recognized when the PWM signal is greater than
99 % for longer than 1 sec.
Potential problem source(s):
- Defect in power supply to DME
- Defective wiring harness between DME and throttle valve
- Defective throttle valve
Terminal condition: Terminal 15
Voltage condition:
- None
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine on
- Throttle valve adaptation not active
- Voltage must be applied to throttle valve actuator
- No limp-home mode

Condition for fault memory entry
This fault is logged in the control module's fault memory if it remains present for longer than 1 sec.

Action in service
- Check power supply to DME
- Check wiring harness between DME and throttle valve
- Open throttle valve manually, if it does not smoothly and
consistently return to its closed position, then replace the
throttle valve

Fault effect and breakdown warning
Breakdown notice:
- The engine reverts to the limp-home mode, continued
driving possible but subject to severe restrictions, stop and
wait for service assistance as soon as possible.
Possible apparent symptoms:
- Power reduction
- Engine speed governed

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

Service instruction
- none