SCM / P0641 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE
Voltage Supply Fuel Line Pressure Sensor, Short to Ground/B+
Fault symptom
CHECK ENGINE
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+: |
| • | Pressure sensor, fuel line |
Dependent:
System reaction to a fault:
| SCM requests CHECK ENGINE lamp lit by ECM. |
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) |
