SCM / P0629 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE
The engine may not start.
Fuel pump running without ignition on.
Fuel Pump Relay Control Circuit High Voltage
Fault symptom
CHECK ENGINE
The engine may not start.
Fuel pump running without ignition on.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Battery voltage must be between 11 - 16 V. |
Fault criteria:
| When voltage on the output exceeds 2.0 V for more than 1 s. |
Dependent:
System reaction to a fault:
| SCM requests CHECK ENGINE lamp lit by ECM. |
OK report:
| Fault criteria NOT fulfilled for 2 s with engine running. |
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:
| (See also description of readings/activations in diagnostic tool) |
