Nissan Altima L32. Manual - part 1402

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DIAGNOSIS AND REPAIR WORKFLOW

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 (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 BAT-

TERY”, then do so. Perform battery test again to confirm repair.

2.

CRANKING CHECK

Check that the starter motor operates properly.
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

>> Perform further diagnosis of engine mechanical or engine control system. Refer to EM and EC

sections. 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 verify the cranking voltage is within specification.

Minimum Specification of Cranking Voltage Referencing Coolant Temperature

Is the voltage less than the specified value?

YES

>> GO TO 7

NO

>> GO TO 6

6.

STARTER OPERATION

Check the starter operation.
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 

STR-8, "Diagnosis Procedure"

.

Is “B” terminal circuit normal?

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

DIAGNOSIS AND REPAIR WORKFLOW

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YES

>> GO TO 8

NO

>> Repair as needed.

8.

“S” CONNECTOR CIRCUIT INSPECTION

Check “S” connector circuit. Refer to 

STR-9, "Diagnosis Procedure"

.

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. Refer to EM, TM or CL

sections. Once resolved, perform battery test again. Refer to Technical Service Bulletin. 

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STARTING SYSTEM

FUNCTION DIAGNOSIS

STARTING SYSTEM

System Diagram

INFOID:0000000004205229

System Description

INFOID:0000000004205230

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.  

AWBIA0741GB

STARTING SYSTEM

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Component Description

INFOID:0000000004205231

Component part

Description

PNP switch (CVT models)

PNP switch supplies power to the starter relay and starter control 
relay inside IPDM E/R when the selector lever is shifted to the P 
or N position.

Clutch interlock switch (M/T models)

The switch turns ON and electric power is supplied to the starter 
relay and starter control relay inside IPDM E/R when the clutch 
pedal is depressed.

BCM

BCM controls the starter relay inside IPDM E/R.

IPDM E/R

CPU inside IPDM E/R controls the starter control relay.

Starter motor

The starter motor plunger closes and the motor is supplied with 
battery power, which in turn cranks the engine, when the “S” ter-
minal is supplied with electric power.