1993 Volvo 960
The diagnoses outlined below are intended to serve only as guides to locate and temporarily correct
minor faults. Causes of unsatisfactory performance should be investigated and corrected by your Volvo
dealer only. See section "Road Assistance".
Starter fails to operate (or operates very
slowly)
Weak battery or dead cell.
With the starting (ignition) switch in the "Driving" or "On" position, check to see if the warning lights
on the dashboard come on and if they stay on when the starter is engaged. If the lights do not come on or
if they go off when the starter is engaged, the battery is discharged, or see below.
Loose or corroded battery cable terminals.
Check battery terminals and clamps. Clean or replace if necessary. Check that the starter cable is secure
at its terminals.
The ground strap, which connects the body to the rear of the engine, should also be checked for
corrosion or looseness.
Open circuit between starting (ignition) switch and starting (ignition) switch terminal on starter.
The circuit is closed if a clicking sound is heard from the starter when it is engaged. If no clicking sound
is heard, check that the blue wire at the starter is secure. If still no clicking sound is heard, the starting
(ignition) switch or the wire is defective.
Starter motor defective.
If the above checks have been performed, and no fault is evident, the starter may be defective.
NOTE: In this case the headlight intensity will not decrease when the starter is engaged.
pg. 6:17 Service diagnosis (cont.)
Starter motor operated but engine does not
start
Intake system leaking.
Check vacuum hose connections at manifold and idle air control valve.
No fuel reaching engine.
Check for fuel in the tank.
Check fuses No. 30 and 31.
No spark.
file:///K|/ownersdocs/1993/1993_960/93960_6_13.html (4 of 7)12/30/2006 9:47:08 AM
