Daytime Running Lights (Drl) Function Does Not Cancel - Mazda MX-5 1990 Workshop Manual

T
LIGHTING SYSTEM
Symptom: Daytime running lights (DRL) function does not cancel.
05UOTX-162
Symptom: DRL function not canceled when
Headlight switch ON
Hazard warning switch ON
Turn signal switch ON
Parking brake switch ON
05UOTX-164
05UOTX-165
T-80
05UOTX-161
Step 1
1. Turn on the ignition switch ON.
2. Verify the symptom by operating the following switches; the
DRL should cancel. Go to the specified Step.
• Headlight switch.
• Hazard warning switch.
• Turn signal switch.
• Parking brake switch (lever pulled one notch).
Next Step
Step 2
Step 4
Step 4
Step 5
05UOTX-163
Step 2
1. Turn on the ignition switch.
2. Turn on the headlight switch.
3. Check the voltage at the terminal-wire (W/R) of the DRL unit
connector.
Wire Voltage
(W/R) 12V
4. If not as specified, go to Step 3.
5. If correct, replace the DRL unit.
Step 3
1. Remove the column cover and disconnect the connectors
of the headlight switch.
2. Check continuity between the terminals of the headlight
switch connector.
Position
Terminal
BTN TNS
Headlight switch ON
0 -0
Headlight switch OFF
()---(): Indicates continuity
3. If not as specified, replace the headlight switch.
4. If correct repair wire (W/R). (Headlight switch - DRL unit)