Cranking System Description

The cranking circuit consists of the battery, starting motor, starting motor control relay, ignition switch (ignition switch model), engine switch (keyless push start model), CPP No.1 switch (M/T model) or TCM (twin clutch system model), and related electrical wiring.

In the circuit shown in Cranking System Circuit Diagram:D16AA, the coil of the magnetic switch in starting motor is energized when ignition is set to “START”. The resulting movement of the plunger and pinion drive lever causes the pinion to engage with the engine flywheel gear while closing the contacts of the magnetic switch. This causes the starting motor to rotate to crank the engine.

When the engine starts, the pinion overrunning clutch protects the armature from excessive speed until the switch is opened, at which time the return spring causes the pinion to disengage.

In ENG A-STOP system, ENG A-STOP control module stores starting motor driving counter.

When starting motor driving counter exceeds 180,000, DTC P1313 is detected and ENG A-STOP warning light is lit.

If DTC P1313 is detected, starting motor assembly must be replaced.