Fault Conditions

P1671
Throttle Limphome Relay Coil Circuit. Short to B+

Fault symptoms
- CHECK ENGINE.

On-Board Diagnostics
Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and does not restart until next driving cycle.

Enable conditions:
- Engine running. Main relay voltage exceeding 10V. Output is active.

Fault criteria:
- Output voltage exceeding 2V for more than 1 S

Dependents:
- None.

System reaction to a fault:
- None.

OK report:
- Enable criteria fulfilled and fault criteria not fulfilled within 60 S.

Fault handling: See "Fault diagnosis, general" for more information.
- Type III.

Diagnostic help
Fault diagnosis concerns electrical fault in connecting leads or in the relay.

Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.

Proceed to Diagnostic Procedures Checking the Relay Power Supply