Nissan Titan A60. Instruction — part 900

DIAGNOSIS AND REPAIR WORKFLOW

STR-5

< BASIC INSPECTION >

C

D

E

F

G

H

I

J

K

L

M

A

STR

N

P

O

NOTE:

To ensure a complete and thorough diagnosis, the battery, starter motor and generator test segments must be

done as a set from start to finish.

1.

DIAGNOSIS WITH MULTITASKING BATTERY DIAGNOSTIC STATION

Perform the starting system test with multitasking battery diagnostic station. For details and operating instruc-

tions, refer to diagnostic station instruction instruction.
Test result

CRANKING NORMAL>>GO TO 2

LOW VOLTAGE>>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 diagnostic station instruction instruction.

REPLACE BATTERY>>Before replacing battery, clean the battery cable clamps and battery posts. Perform

battery test again. Refer to diagnostic station instruction instruction. 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 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-9, "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

STR-6

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

YES

>> GO TO 8

NO

>> Repair as needed.

8.

“S” CONNECTOR CIRCUIT INSPECTION

Check “S” connector circuit. Refer to

STR-10, "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 or TM

sections. Once resolved, perform battery test again. Refer to diagnostic station instruction man-

ual.

STARTING SYSTEM

STR-7

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

L

M

A

STR

N

P

O

SYSTEM DESCRIPTION

STARTING SYSTEM

System Diagram

INFOID:0000000006164568

System Description

INFOID:0000000006164569

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 Parts Location

INFOID:0000000006164570

ALBIA0416GB

1.

A/T assembly
F9 (floor shift)
F17 (column shift)

2.

IPDM E/R E119, E120, E122, E124

3.

BCM M18 (view with instrument panel
lower LH panel removed)

AWBIA0127ZZ

STR-8

< SYSTEM DESCRIPTION >

STARTING SYSTEM

Component Description

INFOID:0000000006164571

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” ter-
minal is supplied with electric power.