Mazda MX-5 NA silhouetteMX-5 NA

LIGHTING SYSTEM

T-68prose procedure
Continued from T-67

Symptom: Hazard warning function does not operate. (Turn signals function normally.)

Hazard warning function does not operate (turn signals function normally)

  1. 1
    Step 1 — Check hazard warning switch. 1. Remove the hazard warning switch. 2. Check continuity between terminals of the switch. 3. If not as specified, replace the right cluster switch assembly. 4. If the cluster switch is OK, go to Step 2.
    Hazard warning switch removed from the cluster panel, showing terminals labeled g and h on the back of the switch connector.
    05U0TX-137
  2. 2
    Measure the voltage at the terminal-wires of the hazard warning switch connector as shown.
    Voltage measurement at the hazard warning switch connector on the cluster panel; voltmeter probes connect to terminals identified by wire labels (O) and (B) on the connector pin diagram shown below.
    05U0TX-272
  3. 3
    Check the voltage at terminal-wire (O) of the turn and hazard flasher unit connector.
    Voltage measurement at the turn and hazard flasher unit connector; voltmeter probes the wire (O) terminal on the flasher unit relay.
    05U0TX-138

Hazard warning switch continuity

ON
Terminal gO—O (continuity)
Terminal hO—O (continuity)
OFF
Terminal g
Terminal h

Hazard warning switch connector voltage check (Step 2)

(O)
Voltage12V
ActionNext, check wire (B)
(O)
Voltage0V
ActionGo to Step 3
(B)
Voltage12V
ActionRepair wire harness (Hazard warning switch — Body ground)
(B)
Voltage0V
ActionReplace turn and hazard flasher unit

Turn and hazard flasher unit connector voltage check (Step 3)

(O)
Voltage12V
ActionRepair wire harness (Flasher unit — Hazard warning switch)
(O)
Voltage0V
ActionReplace turn and hazard flasher unit
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