Headlights Do Not Operate. (Canada Spec.) - Mazda MX-5 1990 Workshop Manual

T
T-48
LIGHTING SYSTEM
Symptom: Headlights do not operate. (Canada spec.)
ffi~~~_HEAD 30A
MAIN FUSE BLOCK
05UOTX-296
05UOTX-092
Step 1
1. Check HEAD 30A fuse in the main fuse block.
2. If the fuse is burned, replace it. Check and repair the wir-
ing harness, if necessary.
,3. If the fuse is OK, go to Step 2.
Step 2
1. Check the headlight bulbs.
2. If a bulb is burned, replace it.
3. If the bulbs are OK, go to Step 3.
Step 3
1. Turn the headlight switch ON.
2. Disconnect the headlight connector, and measure the volt-
age at the following terminal-wires as shown.
Headlight Wire
Headlight
Voltage
Action
switch
12V
Next, check
(R/W)
High beam
wire (RIB)
OV Go to Step 4
12V
Next, check
Left
(R/B)
Low beam
wire (6)
OV Go to Step 4
OV
Next, check
(8) Any position
right side
Repair ground
12V
wire (B)
12V
Next, check
(R/W)
High beam
wire (RIB)
OV
Go to Step 4
12V
Next, check
(R/B)
Low beam
wire (6)
Right OV Go to Step 4
Check for poor
OV
connection of
(B)
Any position headlight
connector
12V Go to Step 4