Detailed Flow

WARNING: This page is about a different car, the 2017 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

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.

If any malfunction is found, immediately disconnect the battery cable from the negative terminal.

DIAGNOSIS WITH MULTITASKING BATTERY AND ELECTRICAL DIAGNOSTIC STATION GR8-1200 NI

Perform starting system test with Multitasking battery and electrical diagnostic station GR8-1200 NI. For details and operating instructions, refer to diagnostic station Instruction Manual.

How is the test result?

CRANKING NORMAL

GO TO STEP 3 .

LOW VOLTAGE

GO TO STEP 2.

CHARGE BATTERY

Perform the slow battery charging procedure. (Initial rate of charge is 10 A for 12 hours.) Perform battery test again. Refer to diagnostic station instruction manual.

REPLACE BATTERY

Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test again. Refer to diagnostic station instruction manual. If second test result is "REPLACE BATTERY", then do so. Perform battery test again to confirm repair.

COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE

Compare engine coolant temperature and the cranking voltage with the specifications.

MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERATURE

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 STEP 11 .

GO TO STEP 3 .

CHECK ENGINE START

Check engine and check that engine starts.

Does engine start?

YES

GO TO STEP 4 .

NO

GO TO STEP 5 .

CHECK RETURN OF PINION GEAR

Check that pinion gear returns to original position after engine starts.

Does pinion gear return?

YES

Starter motor is OK. INSPECTION END

NO

GO TO STEP 11 .

CHECK ENGINE SPEED WITH CRANKING

Check that engine turns while cranking.

Does engine turn by cranking?

YES

GO TO STEP 6.

NO

GO TO STEP 7.

CHECK STARTER MOTOR TURNING WITH CRANKING

Check that starter motor runs smoothly without abnormal noise at cranking.

Does starter motor turn normally?

YES

Check ignition/fuel system

NO

Check engine mechanical and power train system.

CHECK STARTER MOTOR SPEED WITH CRANKING

Check that starter motor turns while cranking.

Does starter motor turn at cranking?

YES

GO TO STEP 8 .

NO

GO TO STEP 9 .

CHECK PINION GEAR AND RING GEAR ENGAGEMENT

Check condition of pinion and ring gear engagement.

Is inspection result normal?

YES

Check engine mechanical and power train system.

NO

Check pinion protrusion length. Refer to INSPECTION .

CHECK POWER SUPPLY CIRCUIT

Check the following conditions.

• Fuse and fusible link

• Charge condition, corrosion and connection condition of battery. Refer to HOW TO HANDLE BATTERY .

Are these inspection results normal?

YES

GO TO STEP 10.

NO

Repair as needed.

CHECK STARTING SYSTEM WIRING

Check the following.

• "B" terminal circuit. Refer to DIAGNOSIS PROCEDURE .

• "S" terminal circuit. Refer to DIAGNOSIS PROCEDURE .

Are these inspection results normal?

YES

GO TO STEP 11.

NO

Repair as needed.

CHECK MAGNETIC SWITCH OPERATION

Check magnetic switch operation. Refer to INSPECTION .

Does magnetic switch operate normal?

YES

GO TO STEP 12.

NO

Replace magnetic switch or stater motor.

CHECK PINION TURNING

1. Remove starter motor.

2. Check that pinion turns smoothly by hand.

Does pinion turn normally?

YES

Perform no-load test of starter motor. Refer to INSPECTION .

NO

Check pinion clutch. Refer to INSPECTION .