user manual

7-38
SIGNALING SYSTEM
ELEC
4. Voltage
 Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Tester positive probe  brown
Tester negative probe  sky blue
1
2
 Set the main switch to “ON”.
 Measure the voltage (12 V) of brown and
sky blue at the meter assembly coupler.
 Is the voltage within specification?
1
2
YES
The wiring circuit
from the main switch
to the meter light bulb
coupler is faulty and
must be repaired.
NO
This circuit is OK.
Replace the oil level
warning light bulb,
socket or both.
NO
EAS00802
5. The oil level warning light fails to come on.
1. Oil level warning light bulb and socket
 Check the oil level warnig light bulb and sock-
et for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
 Are the oil level warnig light bulb and socket
OK?
YES
Replace the oil level
switch.
NO
2. Oil level switch
 Drain the engine oil and remove the oil level
switch from the oil pan.
 Check the oil level switch for continuity.
Refer to “CHECKING THE SWITCHES”.
 Is the oil level switch OK?
YES
Replace the oil level
relay.
NO
3. Oil level relay
 Disconnect the oil level relay from the cou-
pler.
 Connect the pocket tester (Ω  1) and bat-
tery (12 V) to the oil level relay terminals as
shown.
YES
Battery positive terminal  brown
Battery negative terminal  black/red
 Does the oil level relay have continuity be-
tween red/blue and black?
Tester positive probe  red/blue
Tester negative probe  black
1
2
3
4
B/R