Starting System: Other — Suzuki Equator I (2008-2012)

Precaution for Power Generation Variable Voltage Control System

CAUTION

For this model, the battery current sensor that is installed to the negative battery cable measures the charging/discharging current of the battery and performs various engine controls. If an electrical component is connected directly to the negative battery terminal, the current flowing through that component will not be measured by the battery current sensor. This condition may cause a malfunction of the engine control system and battery discharge may occur. Do not connect an electrical component or ground wire directly to the battery terminal.

The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.

Component part	Description
TCM	TCM supplies power to the starter relay inside the IPDM E/R when the selector lever is shifted to the P or N position.
BCM	BCM sends a starter request signal to the CPU of the IPDM E/R over the CAN communication lines.
IPDM E/R	CPU inside IPDM E/R operates the starter relay at the request of the BCM over the CAN communication lines.
Starter motor	The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the "S" terminal is supplied with electric power.

STARTING SYSTEM COMPONENT DESCRIPTION CHART [A/T]

The clutch interlock (clutch start) switch allows for starting the engine without depressing the clutch pedal by bypassing the clutch interlock switch. The clutch interlock system is canceled once the ignition switch is turned OFF. Once the clutch interlock system is activated, the starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.

Component part	Description
Clutch interlock switch	Clutch interlock switch supplies power to the coil side of the starter relay when the clutch pedal is depressed to crank the engine.
Clutch interlock cancel switch	Clutch interlock cancel switch bypasses the clutch interlock switch and supplies power to the coil side of the starter relay to crank the engine without the clutch pedal being depressed.
BCM	BCM sends a starter request signal to the CPU of the IPDM E/R over the CAN communication lines.
IPDM E/R	CPU inside IPDM E/R operates the starter relay at the request of the BCM over the CAN communication lines.
Starter motor	The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the "S" terminal is supplied with electric power.

STARTING SYSTEM COMPONENT DESCRIPTION CHART [M/T WITH CLUTCH INTERLOCK CANCEL SYSTEM]

Component part	Description
Clutch interlock switch	Clutch interlock switch supplies power to the coil side of the starter relay when the clutch pedal is depressed to crank the engine.
BCM	BCM sends a starter request signal to the CPU of the IPDM E/R over the CAN communication lines.
IPDM E/R	CPU inside IPDM E/R operates the starter relay at the request of the BCM over the CAN communication lines.
Starter motor	The starter motor plunger closes and the motor is supplied with battery power, which in turn cranks the engine, when the "S" terminal is supplied with electric power.

STARTING SYSTEM COMPONENT DESCRIPTION CHART [M/T WITHOUT CLUTCH INTERLOCK CANCEL SYSTEM]

Scheme 16

Scheme 16: Starting System: System Diagram [A/T]

Scheme 17

Scheme 17: Starting System: System Diagram [M/T with Clutch Interlock Cancel System]

Scheme 18

Scheme 18: Starting System: System Diagram [M/T without Clutch Interlock Cancel System]

Scheme 19

Scheme 19: Starting System: Component Parts Location [A/T]

Scheme 20

Scheme 20: Starting System: Component Parts Location [M/T with Clutch Interlock Cancel System]

Scheme 21

Scheme 21: Starting System: Component Parts Location [M/T without Clutch Interlock Cancel System]

Scheme 22

Scheme 22: OVERALL SEQUENCE

DETAILED FLOW

Note. To ensure a complete and thorough diagnosis, the battery, starter motor and alternator test segments must be done as a set from start to finish.

Step	Action	YES	NO
1	DIAGNOSIS WITH STARTING/CHARGING SYSTEM TESTER Perform the starting system test with Starting/Charging System Tester (J-44373). For details and operating instructions, refer to Technical Service Bulletin. Test result	GO TO 2	GO TO 5
2	CRANKING CHECK Check that the starter motor operates properly. Does the engine crank normally?	GO TO 3	GO TO 4
3	ENGINE START CHECK Check that the engine starts. Does the engine start?	Starter motor is OK. Inspection End.	Perform further diagnosis of engine mechanical or engine control system. Refer to section 1A and 1D. Once resolved, perform battery test again.
4	STARTER MOTOR ACTIVATION Check that the starter motor operates. Does the starter motor turn?	Check ring gear and starter motor drive pinion. Once resolved, perform battery test again.	GO TO 7
5	COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE Compare the engine coolant temperature and verify the cranking voltage is within specification. Is the voltage less than the specified value?	GO TO 7	GO TO 6
6	STARTER OPERATION Check the starter operation. Does the starter motor turn smoothly?	Starter motor is OK. Inspection End.	GO TO 7
7	"B" TERMINAL CIRCUIT INSPECTION Check "B" terminal circuit. Refer to [ B TERMINAL CIRCUIT CHECK ]. Is "B" terminal circuit normal?	GO TO 8	Repair as needed.
8	"S" CONNECTOR CIRCUIT INSPECTION Check "S" connector circuit. Refer to [ S CONNECTOR CIRCUIT CHECK [QR25DE] ] (QR25DE) or [ S CONNECTOR CIRCUIT CHECK [VQ40DE] ] (VQ40DE). Is "S" connector circuit normal?	GO TO 9	Repair as needed.
9	ENGINE ROTATION STATUS Check that the engine can be rotated by hand. Does the engine turn freely by hand?	Replace starter motor. Refer to [ STARTER MOTOR: REMOVAL AND INSTALLATION (QR25DE) ] or [ STARTER MOTOR: REMOVAL AND INSTALLATION (VQ40DE) ].	Perform further diagnosis of engine mechanical or powertrain mechanism. Refer to section 1D, 5A or 5B. Once resolved, perform battery test again. Refer to Technical Service Bulletin.

DIAGNOSIS PROCEDURE CHART

Starter

Application		QR25DE	VQ40DE
Manufacturer		Mitsubishi M000T88281	Mitsubishi M001TA0072
Type		Reduction gear type
System voltage		12V
No-load	Terminal voltage	11V
	Current	Less than 90A	Less than 120A
	Revolution	More than 2,800 rpm	More than 3,100 rpm

STARTER SPECIFICATIONS

Special Service Tool

SPECIAL SERVICE TOOL Tool number (Kent Moore No.) Tool name Description - (J-44373) Model 620 Starting/Charging system tester Tests starting and charging systems. For operating instructions, refer to

Scheme 23

Scheme 23: Special Service Tool

Commercial Service Tool

COMMERCIAL SERVICE TOOL Tool name Description Power tool Loosening bolts and nuts

Scheme 24

Scheme 24: Commercial Service Tool

Starting System: Other Suzuki Equator I