Mazda MX-5 1990 Workshop Manual page 646

T
(G/R) (8)
(~
T-64
LIGHTING SYSTEM
05UOTX-303
05UOTX-304
05UOTX-132
(RH) .... (G/W) (B) (RIB)
(LH) .... (G/B)
05UOTX-305
Step 4
1. Check the bulbs.
2_ If a bulb is burned, replace it.
3. If the bulbs are OK, go to Step 5.
Step 5
1. Turn the ignition switch ON.
2. Measure the voltage at terminal-wire (SlY) of the turn sig-
nal switch connector.
Wire Voltage Action
12V Go to Step 6
(BIY)
OV
Repair wiring harness
(HAZARD 15A fuse - Turn signal switch)
Step 6
Measure the voltage at the terminal-wires of the turn and haz-
ard warning flasher unit connector.
Wire Condition Voltage Action
12V
Repair wire harness
(B) Constant
(Flasher unit - Body ground)
OV Next, check wire
(G/R)
Turn signal
12V Next, check wire (GIY)
(G/R) switch right
OV
Repair wire harness
position
(Turn signal switch - Flasher unit)
Turn signal
12V Next, check wire (SIR)
(GIY) switch left
OV
Repair wire harness
position
(Turn signal switch - Flasher unit)
12V Go to Step 7
(SIR) Constant
OV
Repair wire harness
(HAZARD 15A fuse - Flasher unit)
Step 7
1. Disconnect the turn signal light connectors.
2. Measure the voltage at the terminal-wires of the turn signal
light connectors as shown.
Light Wire Condition Voltage Action
12V
Repair wire harness
Front
(Bulb - Body ground)
RH
Repair wire harness
Turn signal
OV
(Flasher unit - Bulb)
r---- (G/W) switch right
pOSition
12V
Repair wire harness
Rear
(Bulb - Body ground
RH
Repair wire harness
OV
(Flasher unit - Bulb)
12V
Repair wire harness
Front
(Bulb - Body Ground)
LH
Repair wire harness
Turn signal
OV
(Flasher unit - Bulb)
-
(GIS) switch left
pOSition
12V
Repair wire harness
Rear
(Bulb - Body ground)
LH
Repair wire harness
OV
(Flasher unit - Bulb)
_ _ _ _ _ _ _ _ - _ _ _ _ _ 0 - _ _ _ _ _ _ _ _ _ _ _ - - - , _ _ _ _ - - - - - , -_ _ _ _ _ _ - - - , - - -_ _ _ _ _ _ _ _ _ _ _ _ _ _ _