Subaru XT 1988 Service Manual page 1320

6-3 WIRING DIAGRAM AND TROUBLESHOOTING
2} Tachometer
Tachometer pointer will not ope·
rate.
Yes
I
Fuse is blown.
I
Replace fuse (15M.
See if fuse is blown.
No
See if fuel gauge and temperature
gauge operate normally. (Sub·
stitutive check of power source
and grounding).
Yes
With ignition switch off. check
conduction between combination
meter terminal and ignition coil
(-).
Yes
Tachometer is defective.
• Defective circuit.
• Hair spring or coil broken.
• Foreign matter caught in
movement.
Replace tachometer.
Tachometer trouble
Tachometer pointer deflects be·
yond maximum point.
Tachometer pointer will not reo
turn to 0 nor exceed certain
point.
Hair spring is deformed.
• Adjusting resistor value devia·
tes.
• Deteriorated capacity of filter
condenser.
• Pointer stopper deformed.
• Foreign matter interfering.
• Pointer deformed.
I
I
Replace tachometer.
j
No
- Harness is defective.
No
Repair or replace.
Signal wires (yellow) of instru·
ment panel and front harness
!tachometer) defective.
Repair.
48