THE ECO-GOVERNOR CHECKLIST (CONT’D) No.
I/O
28
Is the rack actuator relay connected with contact off (rack actuator power supply interruption) by the key switch? Is the rack actuator relay’s connection in accordance with the referential electrical connection diagram? Even if some trouble is occurred in the main relay and power supply self-holding feature, the engine can be stopped by shutting off the rack actuator’s power supply by the key switch. Is the connection enable the starter motor start prevention by starter relay? Is the starter relay’s connection in accordance with the referential electrical connection diagram? During the rack self-diagnosis at the E-ECU’s power on, the starter movement must be prevented. Is the key switch’s start position signal connected to the E-ECU’s STARTSW terminal? Is the engine start signal (E8) connected in accordance with the referential electrical connection diagram? In the E-ECU, the engine start signal (E8) must be entered for injection to start even when the starter is working.Also, be noted that when the starter start isn’t checked by the speed sensor (E18, E19) even with the STARTSW terminal (E8) entered in the E-ECU, the speed sensor failure is detected. Is the Bobcat genuine relay (198461-52950) used for the main relay and sub relay, or diode for the protection against reverse connection installed? Diode is required to protect the E-ECU from the reverse connection of battery cable. Is the cable length from battery to main relay fuse less than 4m? The numerical value is the length that confirms the engine performance by Bobcat. Is the total cable length from the main relay fuse to the E-ECU’s VB terminal (E48), GND terminal (E45) to battery less than 5 m? The numerical value is the length that confirms the engine performance by Bobcat. Is the total cable length from the main relay fuse to the main relay, from the main relay to the rack actuator relay, from the rack actuator relay to the rack actuator, from the rack actuator to the E-ECU’s RACSOL terminal (E42), from the EECU’s GND-P terminal (E47) to battery less than 10 m? The numerical value is the length that confirms the engine performance by Bobcat. Is a twisted-pair cable used for the speed sensor?
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35 36
Is a shield + twisted-pair cable used for the CAN communication (E39, E49) connection? 37 Is an appropriate fuse used to meet the load’s requested current and the electric cableís allowable current? When design is inappropriate, fuse may often interrupted and cause the harness fire. 38 Is the design allow to branch the circuit that requests a large current of more than 10 A (starter and starting aid, etc.) and a small current of a few A (E-ECU, fuel feed pump, etc.) from the same fuse circuit? Such a design may cause malfunction including widening the cable road of the small current circuit when combined with the large current circuit fuse capacity.Group the fuse circuit by function and requested electrical current. 39 Are electric cables whose heat resistance is appropriate to surrounding thermal conditions used?. Heat resistant temperature of higher than 100°C is recommended for the harness surrounding the engine. Wiring harness installation 40 Is the harness cramped to appropriate structures so as to prevent vibrations? Vibration may cause the inside of electrical cable to be disconnected, and short the cable. 41 Is the harness cramp strained? The disconnection is caused.
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Design
Result Installation
OK/NG
-
OK/NG
-
OK/NG
-
OK/NG
-
OK/NG ( m)
-
OK/NG ( m)
-
OK/NG ( m)
-
OK/NG
-
OK/NG
-
OK/NG
-
OK/NG
-
OK/NG ( °C)
-
-
OK/NG
-
OK/NG
Remarks
E55W, E60, E80 Electronic Control System Manual
