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2016 – MX-5 – Body and Accessories

POWER SUPPLY SWITCHING

Outline

• The power supply circuit can be switched by pressing the bush button start.

Function

• Based on the push button start signals, the start stop unit switches the power supply circuit by turning on/off the relay according to the vehicle conditions such as the position of the selector lever (AT)/shift lever (MT) and depression/release of the brake pedal (AT)/clutch pedal (MT).

Automatic ignition switch off function

• When all the following signals are detected for 25 min or more, the start stop unit switches the ignition off automatically.

• Light switch signal (light switch not operated)

• Wiper and washer switch signal (wiper and washer switch not operated)

• Steering switch signal (steering switch not operated)

• Hazard warning switch signal (hazard warning switch not operated)

• Push button start signal (push button start not operated)

• ACC relay ON signal

• IG1 relay OFF signal

• All door latch switch OFF signals (all doors closed)

• Clutch pedal position (CPP) switch OFF signal (clutch pedal not depressed) (MT)

• Starter interlock switch OFF signal (clutch pedal not depressed) (MT)

• Brake switch OFF signal (brake pedal not depressed) (AT)

• Vehicle speed signal (5 km/h {3 mph} or less)

• NOT-P position switch OFF signal (selector lever is in P position) (AT)

• P position signal (selector lever is in P position) (AT)

System Wiring Diagram

Structural View

Operation

Switching the ignition

• By pressing the push button start under the conditions shown in the table, the ignition can be switched.

^*1

To switch the ignition to ACC or off from ON (engine on), the vehicle speed must be 5 km/h {3 mph} or less.

Switching the power supply circuit

• The start stop unit switches the power supply circuit as shown in the figure according to the switching of the ignition.

Fail-safe

• Not applicable

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