With key switch ON and high power mode OFF, push high power (HP) mode switch.
HIGH POWER MODE
YES: Indicator and switch
INDICATOR LIGHT (H5)
Does switch stay down and high power mode indicator light come ON?
NO: Go to next check.
Push high power (HP) mode switch again.
Does switch return to original position and indicator go OFF?
HIGH POWER (HP)
YES: Switch is OK. Go to
MODE SWITCH (S12)
NO: Switch has failed.
Turn key switch OFF.
Disconnect engine mode and RPM control unit (A4) connector.
Connect ohmmeter between pins 3 and 4 of connector.
Measure continuity with high power (HP) mode switch in OFF and ON positions.
Reconnect engine mode and RPM control unit connector.