P2500

P2500 00

Generator L Terminal Control Circuit, Short To Ground







Fault symptom
Charging lamp on with engine running.
Higher idling speed.

On-board diagnosis

Type of diagnosis:
Continuous

Enable criteria:
Ignition ON.
Engine running.
Generator active.

Fault criteria:
Lead between control module pin B16 and generator pin 1 (D+) short circuit to ground for more than 3 s.

Dependent
P0337, P0339

System reaction to a fault:
Control module continues working with the higher idling function.

OK report:
Fault criteria NOT fulfilled for 4 s.

Fault handling:
Type III without Check Engine.
(See Description of On-Board Diagnostics/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:
Test value:
- Alternator L Terminal
- Alternator F Terminal

Activation:
- Alternator L Terminal Load Dump