Mazda MX-5 1990 Workshop Manual page 648

T
(G/R) (8)
(.,
T-66
LIGHTING SYSTEM
05UOTX-308
(B/Y)
05UOTX-309
05UOTX-134
05UOTX-135
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 (B/Y) of the turn sig-
nal switch connector.
Wire Voltage Action
12V
Go to Step 6
(B/y)
OV
Repair wire 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)
Turn signal
12V Next. check wire (G/R)
(G/R) switch right
OV
Repair wire harness
position
(Turn signal switch - Flasher unit)
Turn Signal
12V
Next, check wire (Y/G)
(G/Y) switch left
OV
Repair wire harness
position
(Turn signal switch - Flasher unit)
12V Go to Step 7
(BfR) Constant
OV
Repair wire harness
(HAZARD 15A fuse - Flasher unit)
Step 7 ,
Measure the voltage at the terminal-wires of the turn signal
light connectors as shown.
Light Wire
Condition Voltage Action
Front
12V
Repair wire harness
RH
(G/Y)
(Bulb - Body ground)
Turn signal
OV Go to Step 8
switch right
12V
Repair wire harness
Rear
(G/W)
position
(Bulb - Body ground
RH
Repair wire harness
OV
(Flasher unit - Bulb)
Front
12V
Repair wire harness
LH
(G/O) (Bulb - Body Ground)
Turn signal
OV
Go to Step 8
switch left
12V
Repair wire harness
Rear
(G/8)
position
(Bulb - Body ground)
LH
Repair wire harness
OV
(Flasher unit - Bulb)