Hazard Warning Function Does Not Operate - Mazda MX-5 1990 Workshop Manual

T
T-68
LIGHTING SYSTEM
Symptom: Hazard warning function does not operate.
(Turn signals function normally.)
05UOTX-137
05UOTX-272
05UOTX-138
05UOTX-310
Step 1 - Check hazard warning switch.
1. Remove the hazard warning switch.
2. Check continuity between terminals of the switch.
Switch
Terminal
ON
~I-----+I---~
OFF
0---0:
Indicates continuity
3. If not as specified, replace the right cluster switch assembly.
4. If the cluster switch is OK, go to Step 2.
Step 2
Measure the voltage at the terminal-wires of the hazard warn-
ing switch connector as shown.
Wire Voltage Action
(0)
12V Next, check wire (B)
OV
Go to Step 3
12V
Repair wire harness
(B)
(Hazard warning switch - Body ground)
OV Replace turn and hazard flasher unit
Step 3
Check the voltage at terminal-wire (0) of the turn and hazard
flasher unit connector.
Wire Voltage
Action
12V
Repair wire harness
(0)
(Flasher unit - Hazard warning switch)
OV Replace turn and hazard flasher unit