Test No. 7

Turn on headlights. If headlights do not come on, repair headlight circuit. If headlights come on, turn off headlights. Measure voltage at terminal 2H (White/Blue wire) of CPU No. 2 (8-pin connector). SeeFig 1 . If battery voltage is not present, repair wiring between headlight relay and CPU No. 2. If battery voltage is present, replace CPU No. 2.

Fig 1: CPU No. 2 (8-Pin Connector) Terminal ID

Courtesy of MAZDA MOTORS CORP.