SAAB WIS ONLINE

P0686

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Engine turns off. Engine fails to start.

P0686


Main Relay Circuit. No Voltage to Control Module

Fault symptoms


CHECK ENGINE lamp on.

Engine turns off.

Engine fails to start.


On-Board Diagnostics

Type of diagnosis:


- Continuous.


Enable criteria:


- Engine running.


Fault criteria:


- The many relay has been switched off too early.


Check the wiring

A fault in the control module's female connector can generate a DTC. Check the contact for oxidation, dislodge pins and pin clamping force.

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this. Check switches, connectors and crimp connections for oxidation, dislodged pins and pin clamping force.

Diagnostic help

Functions in the diagnostic tool related to the fault:


Read value:

Main relay

Activate:

Main relay


For more information, see also:

- "Read Values" menu for a description of read values.

- "Activate" menu for a description of applications.