warning NISSAN TEANA 2014 Repair Manual

CHG-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
VQ35DE : Component Description
INFOID:0000000009460649
Component part Description
Generator (IC regulator) The IC regulator controls the power generation voltage by the tar-
get power generation voltage based on the received PWM com-
mand signal.
When there is no PWM command signal, the generator performs
the normal power generation according to the characteristic of the
IC regulator.
ECM The battery current sensor detects the charging/discharging cur-
rent of the battery. The ECM judges the battery condition based on
this signal.
The ECM judges whether to request more output via the power
generation voltage variable control according to the battery condi-
tion.
When performing the power generation voltage variable control,
the ECM calculates the target power generation voltage according
to the battery condition and sends the calculated value as the pow-
er generation command value to the IPDM E/R.
IPDM E/R The IPDM E/R converts the received power generation command
value into a pulse width modulated (PWM) command signal and
sends it to the IC regulator.
Combination meter (c harge warning lamp) The IC regulator warning function activates to illuminate the
charge warning lamp if any of the following symptoms occur while
generator is operating:
·Excessive voltage is produced.
·No voltage is produced.
Battery current sensor The battery current sensor is located on the negative battery cable
terminal. The battery current sensor detects the charging/dis-
charging current of the battery and sends a voltage signal to the
ECM according to the current value detected.
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CHG
CHARGING SYSTEMCHG-9
< SYSTEM DESCRIPTION >
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CHARGING SYSTEM
System DiagramINFOID:0000000009460650
System DescriptionINFOID:0000000009460651
The generator provides DC voltage to operate the vehicl
e's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Component DescriptionINFOID:0000000009460652
ALMIA0579GB
Component part Description
Generator Terminal “1” Refer to
CHG-26, "Description"
.
Terminal “2” Refer to CHG-27, "Description"
.
Terminal “3” Refer to CHG-30, "Description"
.
Terminal “4” Used for the power generation voltage variable control system.
Refer to CHG-10, "Syste m Description"
.
Combination meter (C harge warning lamp) The IC regulator warning function activates to illuminate the
charge warning lamp if any of the following symptoms occur while
generator is operating:
• Excessive voltage is produced.
• No voltage is produced.
IPDM E/R Used for the power generation voltage variable control system.
Refer to CHG-10, "Syste m Description"
.
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CHG
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
CHG-11
< SYSTEM DESCRIPTION >
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Combination meter (c
harge warning lamp) The IC regulator warning function activates to illuminate the
charge warning lamp if any of the following symptoms occur while
generator is operating:
• Excessive voltage is produced.
• No voltage is produced.
Battery current sensor The battery current sensor is located on the battery cable terminal.
The battery current sensor detects the charging/discharging cur-
rent of the battery and sends a voltage signal to the ECM accord-
ing to the current value detected.
Component part Description
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CHG
DIAGNOSIS AND REPAIR WORKFLOWCHG-19
< BASIC INSPECTION >
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>> GO TO 2.
2.STOP POWER GENERATION VOLT
AGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variabl e control in either of the following procedures.
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select- ing “ALTERNATOR DUTY” of “Active Test”. Continue “Active Test” until the end of inspection. (When the
DUTY value is 0 or 100 %, the normal power generation is performed according to the characteristic of the
IC regulator of the generator.)
• Turn the ignition switch OFF, and disconnect the batte ry current sensor connector. [However, DTC (P1550–
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self diagnosis results history of the engine using CONSULT.]
>> GO TO 3.
3.DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI
Perform the charging system test using Multitasking battery and electrical diagnostic station GR8-1200 NI or
Battery and electrical diagnostic analyzer EXP-800 NI. Re fer to the applicable Instruction Manual for proper
testing procedures.
Test result
NO PROBLEMS>>Charging system is normal and will also show “DIODE RIPPLE” test result.
NO VOLTAGE>>GO TO 4.
LOW VOLTAGE>>GO TO 12.
HIGH VOLTAGE>>GO TO 14.
EXCESSIVE RIPPLE, OPEN PHASE, OPEN DIODE or SHORTED DIODE>>Replace the generator. Refer
to CHG-32, "Removal and Installation"
. Perform “DIODE RIPPLE” test again using Multitasking
battery and electrical diagnostic station GR8-1200 NI or Battery and electrical diagnostic analyzer
EXP-800 NI to confirm repair.
4.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES >> GO TO 6.
NO >> GO TO 5.
5.“L” TERMINAL CIRCUIT (OPEN) INSPECTION
Check “L” terminal circuit (open). Refer to CHG-27, "Diagnosis Procedure"
.
Is the
“L” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
6.INSPECTION WITH CHARGE WARNING LAMP (IDLING)
Start the engine and run it at idle.
Does the charge warning lamp turn OFF?
YES >> GO TO 9.
NO >> GO TO 7.
7.“L” TERMINAL CIRCUIT (SHORT) INSPECTION
Check “L” terminal circuit (short). Refer to CHG-29, "Diagnosis Procedure"
.
Is the
“L” terminal circuit normal?
YES >> GO TO 8.
NO >> Repair as needed.
8.“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to CHG-30, "Diagnosis Procedure"
.
Is the
“S” terminal circuit normal?
YES >> GO TO 10.
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CHG-20
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
NO >> Repair as needed.
9.INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 3,000 RPM)
Increase and maintain the engine speed at 3,000 rpm.
Does the charge warning lamp remain off?
YES >> GO TO 11.
NO >> GO TO 10.
10.INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to CHG-32, "Removal and Installation"
.
Is generator pulley normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
11 .“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is
“B” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
12.“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is
“B” terminal circuit normal?
YES >> GO TO 13.
NO >> Repair as needed.
13.INSPECTION OF GENERATOR PULLEY
Check generator pulley. Refer to CHG-32, "Removal and Installation"
.
Is generator pulley normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
14.“S” TERMINAL CIRCUIT INSPECTION
Check “S” terminal circuit. Refer to CHG-30, "Diagnosis Procedure"
.
Is the
“S” terminal circuit normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
Work Flow (Without EXP- 800 NI or GR8-1200 NI)INFOID:0000000009460658
OVERALL SEQUENCE
Before performing a generator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-
able test probes are necessary for the test.
• Before starting, inspect the fusible link.
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CHG
DIAGNOSIS AND REPAIR WORKFLOWCHG-21
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• Use fully charged battery.
DETAILED FLOW
1.PRELIMINARY INSPECTION
Perform the preliminary inspection. Refer to CHG-23, "Diagnosis Procedure"
.
>> GO TO 2.
2.STOP POWER GENERATION VOLT AGE VARIABLE CONTROL SYSTEM
Stop the operation of the power generation voltage variabl e control in either of the following procedures:
• After selecting “ENGINE” using CONSULT, set the DUTY value of “ALTERNATOR DUTY” to 0 % by select- ing “ALTERNATOR DUTY” with “Active Test”. Continue “Active Test” until the end of inspection. (When the
DUTY value is 0 or 100 %, the normal power generation is performed according to the characteristic of the
IC regulator of the generator.)
• Turn the ignition switch OFF, and disconnect the batte ry current sensor connector. [However, DTC (P1550 -
P1554) of the engine might remain. After finishing the inspection, connect the battery current sensor connec-
tor and erase the self-diagnostic results history of the engine using CONSULT.]
>> GO TO 3.
3.INSPECTION WITH CHARGE WARNING LA MP (IGNITION SWITCH IS TURNED ON)
When ignition switch is turned ON.
Does the charge warning lamp illuminate?
ALMIA0577GB
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CHG-22
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
YES >> GO TO 4.
NO >> GO TO 10.
4.INSPECTION WITH CHARGE WA RNING LAMP (IDLING)
Start the engine and run it at idle
Does the charge warning lamp turn OFF?
YES >> GO TO 5.
NO >> GO TO 6.
5.INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 2,500 RPM)
Increase and maintain the engine speed at 2,500 rpm.
Does the charge warning lamp illuminate?
YES >> GO TO 8.
NO >> Inspection End.
6.“L” TERMINAL CIRCUIT (SHORT) INSPECTION
Check terminal “L” circuit for (short). Refer to CHG-29, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair as needed.
7.“S” TERMINAL CIRCUIT INSPECTION
Check terminal “S” circuit. Refer to CHG-30, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair as needed.
8.MEASURE “B” TERMINAL VOLTAGE
Start engine. With engine running at 2,500 rpm, measure “B” terminal voltage.
What voltage does the measurement result show?
Less than 13.0 V>>GO TO 9.
More than 16.0 V>>Replace generator. Refer to CHG-32, "Removal and Installation"
.
9.“B” TERMINAL CIRCUIT INSPECTION
Check “B” terminal circuit. Refer to CHG-26, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> Repair as needed.
10.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON)
1. Disconnect generator connector and apply ground to “L” terminal.
2. Turn the ignition switch ON.
Does the charge warning lamp illuminate?
YES >> Replace generator. Refer to CHG-32, "Removal and Installation".
NO >> GO TO 11.
11 .CHECK “L” TERMINAL CIRCUIT (OPEN)
Check “L” terminal circuit (OPEN). Refer to CHG-27, "Diagnosis Procedure"
.
>> Repair as needed.
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CHG
L TERMINAL CIRCUIT (OPEN)CHG-27
< DTC/CIRCUIT DIAGNOSIS >
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L TERMINAL CIRCUIT (OPEN)
DescriptionINFOID:0000000009460663
The “L” terminal circuit controls the charge warning
lamp. The charge warning lamp turns ON when the igni-
tion switch is set to ON or START. When the generator is providing sufficient voltage with the engine running,
the charge warning lamp turns OFF. If the charge warn ing lamp illuminates with the engine running, a malfunc-
tion is indicated.
Diagnosis ProcedureINFOID:0000000009460664
Regarding Wiring Diagram information. Refer to CHG-12, "Wiring Diagram".
1.CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check if “L” terminal is clean and tight.

Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair “L” terminal connection. Confirm repair by performing complete Charging system test
using EXP-800 NI or GR8-1200 NI (if available). Refer to applicable Instruction Manual for proper
testing procedures.
2.CHECK “L” TERMINAL CIRCUIT (OPEN)
1. Disconnect the generator connector.
2. Apply ground to generator harness connector terminal.
3. Check condition of the charge warning lamp with the ignition switch in the ON position.
Does it illuminate?
YES >> “L” terminal circuit is normal. Refer to CHG-17, "Work Flow (With EXP-800 NI or GR8-1200 NI)" or
CHG-20, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
NO >> GO TO 3.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the battery cabl e from the negative terminal.
2. Disconnect the combination meter connector.
3. Check continuity between generator harness connector and combination meter harness connector.
is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the harness or connectors.
4.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
Check continuity between combination me ter harness connector and fuse block (J/B).
Generator
GroundCondition
Connector Terminal Ignition switch position Charge warning lamp F7 2 ON Illuminate
Generator Combination meter Continuity
Connector Terminal Connector Terminal
F7 2 M24 11 Yes
Combination meter Fuse box (J/B) Continuity
Connector Terminal Connector Terminal
M24 21 M5 8P Yes
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CHG
L TERMINAL CIRCUIT (SHORT)CHG-29
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L TERMINAL CIRCUIT (SHORT)
DescriptionINFOID:0000000009460665
The terminal “L” circuit controls the charge warning
lamp. The charge warning lamp turns ON when the igni-
tion switch is set to ON or START. When the generator is providing sufficient voltage with the engine running,
the charge warning lamp turns off. If the charge warn ing lamp illuminates with the engine running, a malfunc-
tion is indicated.
Diagnosis ProcedureINFOID:0000000009460666
Regarding Wiring Diagram information, refer to CHG-12, "Wiring Diagram".
1.CHECK “L” TERMINAL CIRCUIT (SHORT)
1. Turn ignition switch OFF.
2. Disconnect generator connector.
3. Turn ignition switch ON.
Does charge warning lamp illuminate?
YES >> GO TO 2.
NO >> Refer to CHG-17, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
or CHG-20, "Work Flow (With-
out EXP-800 NI or GR8-1200 NI)".
2.CHECK HARNESS CONTINUI TY (SHORT CIRCUIT)
1. Turn ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Disconnect combination meter connector.
4. Check continuity between the comb ination meter harness connector and ground.
Is the inspection result normal?
YES >> Replace the combination meter. Refer to MWI-82, "Removal and Installation".
NO >> Repair or replace the harness or connectors.
Combination meter
GroundContinuity
Connector Terminal
F7 2 No
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CHG
CHARGING SYSTEMCHG-31
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
CHARGING SYSTEM
Symptom TableINFOID:0000000009460669
Symptom Reference
Battery discharged
Refer to CHG-17, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

or CHG-20, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
The charge warning lamp does not illuminate when the ignition
switch is set to ON.
The charge warning lamp does not turn OFF after the engine
starts.
The charging warning lamp turns ON when increasing the engine
speed.
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