T8 / P0641 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Limp home
5V Supply Group 1, Short to Ground/B+
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Limp home
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
When the 5-volt output to the following components short circuits to ground or B+: |
• | Throttle Position Sensor 1 |
Dependent:
System reaction to a fault:
OK report:
Fault criterion not fulfilled and vehicle speed over 0 km/h for more than 60 s. |
Fault handling:
(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:
Read values for the above components. |
(See also description of readings/activations in diagnostic tool) |