1 DIAGNOSTIC MODE Setting the diagnostic mode (present and past malfunctions) 1. Turn the main switch to “ON”. 2. Disconnect the EPS self-diagnosis signal connector 1 . NOTE: Do not disconnect the EPS self-diagnosis sig- nal connector before turning the main switch to 2 3. Select the signaling mode by grounding the EPS self-diagnosis signal connector (male side) to the EPS control unit 2 or discon- necting it from the unit as follows. a) Present malfunction signaling mode Ground the EPS self-diagnosis signal connector within 5 seconds after turn- ing the main switch to “ON”, and leave it grounded. The signaling mode is acti- vated after 5 seconds.
b) Past malfunction signaling mode While the present malfunction mode is activated, briefly disconnect the EPS self-diagnosis signal connector, ground it again, and leave it grounded. The sig- naling mode is activated after 5 sec- onds. 4. Turn the main switch to “OFF” to cancel the diagnostic mode. NOTE: The diagnostic mode can also be canceled by riding the vehicle at speeds above 2 km/h. When the diagnostic mode is selected and during the initial lighting of the EPS warning light, the EPS control unit does not receive input from the EPS self-diagnosis signal con- nector. 9 - 62 EPS (ELECTRIC POWER STEERING) SYSTEM ELEC – + ELEC – +