Starting System: Other Infiniti EX35 I

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.

1. DIAGNOSIS WITH STARTING/CHARGING SYSTEM TESTER Perform the starting system test with Starting/Charging System Tester (SST: J-44373). For details and operating instructions, refer to Technical Service Bulletin. Test result CRANKING VOLTAGE NORMAL: GO TO 2. CRANKING VOLTAGE LOW: GO TO 5 . CHARGE BATTERY: Perform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.) Perform battery test again. Refer to Technical Service Bulletin. REPLACE BATTERY: Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test again. Refer to Technical Service Bulletin. If second test result is "REPLACE BATTERY", then do so. Perform battery test again to confirm repair.
2. CRANKING CHECK Check that the starter motor operates correctly. Does the engine crank normally? YES: GO TO 3. NO: GO TO 4 .
3. ENGINE START CHECK Check that the engine starts. Does the engine start? YES: Starter motor is OK. INSPECTION END NO: Starter motor is OK. Perform further diagnosis of engine mechanical or engine control system. Refer to «ENGINE MECHANICAL»(ref-368797) and «ENGINE CONTROL SYSTEM»(ref-368796) articles. Once resolved, perform battery test again.
4. STARTER MOTOR ACTIVATION Check that the starter motor operates. Does the starter motor turn? YES: Check ring gear and starter motor drive pinion. Once resolved, perform battery test again. NO: GO TO 7 .
5. COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE Compare the engine coolant temperature and the cranking voltage with the specifications. Minimum Specification of Cranking Voltage Referencing Coolant Temperature CRANKING VOLTAGE AND COOLANT TEMPERATURE REFERENCE CHART Engine coolant temperature [°C (°F)] Voltage [V] -30 to -20 (-22 to -4) 8.6 -19 to -10 (-2 to 14) 9.1 -9 to 0 (16 to 32) 9.5 More than 1 (More than 34) 9.9 Is the voltage less than the specified value? YES: GO TO 7 . NO: GO TO 6.
6. STARTER OPERATION Check the starter operation status. Does the starter motor turn smoothly? YES: Starter motor is OK. INSPECTION END NO: GO TO 7.
7. "B" TERMINAL CIRCUIT INSPECTION Check "B" terminal circuit. Refer to " «DIAGNOSIS PROCEDURE»(ref-368821-S09367320522010081300000) ". Is "B" terminal circuit normal? YES: GO TO 8. NO: Repair as needed.
8. "S" CONNECTOR CIRCUIT INSPECTION Check "S" connector circuit. Refer to " «DIAGNOSIS PROCEDURE»(ref-368821-S27260405622010081300000) ". Is "S" connector circuit normal? YES: GO TO 9. NO: Repair as needed.
9. ENGINE ROTATION STATUS Check that the engine can be rotated by hand. Does the engine turn freely by hand? YES: Replace starter motor. NO: Perform further diagnosis of engine mechanical or powertrain mechanism. Once resolved, perform battery test again. Refer to Technical Service Bulletin.

Scheme 6

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the " SRS AIRBAG " and " SEAT BELTS ".

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

Special Service Tools

SPECIAL SERVICE TOOLS Tool number (Kent-Moore No.) Tool name Description - (J-44373 Model MCR620) Starting/Charging System Tester Tests starting and charging systems. For operating instructions, refer to Technical Service Bulletin

Scheme 7

Commercial Service Tools

COMMERCIAL SERVICE TOOLS Tool name Description Power tool Loosening bolts, nuts and screws

Scheme 8

Refer to " COMPONENTS " for symbols in the figure.

Scheme 9

Refer to " COMPONENTS " for symbols not described on the above.

Scheme 10

Scheme 11

Scheme 12

1. Disconnect the battery cable from the negative terminal.
2. Remove engine undercover, using power tools.
3. Remove exhaust mounting bracket. Refer to " «2WD : EXPLODED VIEW»(ref-368797-S25216674212010081300000) ".
4. Disconnect steering lower joint (1), then remove it. Refer to " «EXPLODED VIEW»(ref-368792-S05516104802010081300000) ".
5. Remove "B" terminal nut (A).
6. Disconnect "S" connector (B).
7. Remove starter motor mounting bolts (A), using power tools.
8. Remove starter motor (1) downward from the vehicle.

Pinion/Clutch Check

1. Inspect pinion teeth. Replace pinion if teeth are worn or damaged. (Also check condition of ring gear teeth.)
2. Inspect reduction gear teeth. Replace reduction gear if teeth are worn or damaged. (Also check condition of armature shaft gear teeth.)
3. Check to see if pinion locks in one direction and rotates smoothly in the opposite direction. If it locks or rotates in both directions, or unusual resistance is evident, replace.

Starter Motor

STARTER MOTOR SPECIFICATIONS