Page 825 - Workshop Manual - Tunland (2017)
P. 825

DIAGNOSTICS - ENGINE CONTROL SYSTEM                          04-139

                 P584，P585-STARTING MOTOR RELAY DRIVE CIRCUIT FAULT                                                  04

                 P584-STARTING MOTOR RELAY DRIVE CIRCUIT -VOLTAGE IS
                 ABOVE NORMAL OR SHORTED TO HIGH VOLTAGE POWER

                 SUPPLY
                 P585-STARTING MOTOR RELAY DRIVE CIRCUIT -VOLTAGE IS
                 BELOW NORMAL OR SHORTED TO HIGH VOLTAGE POWER

                 SUPPLY

                 Description
                 1 .    The engine control module (ECM) controls the starting motor locking relay by
                        starting motor locking relay signal circuit. When the engine runs, the relay
                        prevents the starting motor from engaging.The relay loop is dependent on the
                        OEM wire. On some vehicles, it may connect back to the ECM, or on the other
                        vehicle, it connects to the chassis or cylinder. For loop details, refer to the
                        electrical wiring diagram of OEM.The starter motor locking relay circuit uses a
                        pulse width modulation (PWM) signal.The PWM signal is a pulse voltage signal
                        between the 0-VDC and the system voltage.The frequency of this pulse voltage
                        signal depends on the require of application type.
                 Circuit Diagram
   820   821   822   823   824   825   826   827   828   829   830