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Nissan Altima HL32 Hybrid. Manual - part 850

PCS

DIAGNOSIS AND REPAIR WORKFLOW

PCS-41

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when

the incident/malfunction occurred).

>> GO TO 2

CHECK DTC

1. Check DTC.

2. Perform the following procedure if DTC is displayed.

Record DTC and freeze frame data.

Erase DTC.

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3. Check related service bulletins for information.
Is any symptom described and any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3

Symptom is described, DTC is not displayed>>GO TO 4

Symptom is not described, DTC is displayed>>GO TO 5

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 5

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 6

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

At this time, always connect CONSULT-III to the vehicle, and check diagnostic results in real time.

If two or more DTCs are detected, refer to

BCS-80, "DTC Inspection Priority Chart"

and determine trouble

diagnosis order.

NOTE:

• Freeze frame data is useful if the DTC is not detected.

• Perform Component Function Check if DTC Confirmation Procedure is not included in Service Manual. This

simplified check procedure is an effective alternative though DTC cannot be detected during this check.

If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC Confirma-

tion Procedure.

Is DTC detected?

YES

>> GO TO 8

>> Refer to

GI-42, "Intermittent Incident"

PERFORM BASIC INSPECTION

Perform basic inspection. Refer to

PCS-42, "Pre-Inspection for Multi-System Diagnostic"

Inspection End>>GO TO 7

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to

PCS-127, "Symptom Table"

based on the confirmed symptom in

step 4, and determine the trouble diagnosis order based on possible causes and symptom.

>> GO TO 8

PCS-42

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

DIAGNOSIS AND REPAIR WORKFLOW

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 9

>> Check voltage of related BCM terminals using CONSULT-III.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 10

10.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction have been fully repaired.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4 and check that

the symptom is not detected.
Is the inspection result normal?

YES

>> Inspection End.

NO (DTC is detected)>>GO TO 8

NO (Symptom remains)>>GO TO 6

Pre-Inspection for Multi-System Diagnostic

INFOID:0000000004498327

The engine start function, door lock function, power distribution system and NATS-IVIS/NVIS are closely

related to each other. Narrow down the system in question by performing this inspection to identify which sys-

tem is malfunctioning. For example, the vehicle security system can operate only when the door lock and

power distribution system are operating normally.

CHECK DOOR LOCK OPERATION

Check the door lock for normal operation with the Intelligent Key and door request switch.

Successful door lock operation with the Intelligent Key and request switch indicates that the remote keyless

entry receiver and inside key antenna required for engine start are functioning normally.
Can the door be locked with the Intelligent Key and door request switch?

YES

>> GO TO 2.

>> Refer to

DLK-188, "Symptom Table"

CHECK ENGINE STARTING

Check that the engine starts when the Intelligent Key is inserted into the key slot.
Does the engine start?

YES

>> GO TO 3.

>> Refer to

SEC-171, "Symptom Table"

CHECK STEERING LOCK OPERATION

Check that the steering locks when operating the door switch after switching the power supply from ON posi-

tion (or ACC position) to LOCK position.

If the door switch is malfunctioning, BCM cannot lock the steering. If BCM does not detect DTC, steering lock

unit is normal.
Does steering lock?

YES

>> GO TO 4.

>> Refer to

DLK-69, "Component Function Check"

CHECK POWER SUPPLY INDICATOR SWITCHING

PCS

DIAGNOSIS AND REPAIR WORKFLOW

PCS-43

< BASIC INSPECTION >

[POWER DISTRIBUTION SYSTEM]

Press push-button ignition switch and check that the position indicator switches from LOCK, through ACC to

ON when steering is locked.
Is each position indicator illuminating?

YES

>> GO TO 5.

>> Refer to

PCS-73, "Component Function Check"

CHECK VEHICLE SECURITY SYSTEM

Check the vehicle security system for normal operation. Refer to

SEC-7, "Vehicle Security Operation Check"

Are the inspection results normal?

YES

>> Inspection End.

>> Repair vehicle security system as necessary.

PCS-44

< FUNCTION DIAGNOSIS >

[POWER DISTRIBUTION SYSTEM]

POWER DISTRIBUTION SYSTEM

FUNCTION DIAGNOSIS

POWER DISTRIBUTION SYSTEM

System Description

INFOID:0000000004219131

INPUT/OUTPUT SIGNAL CHART

SYSTEM DESCRIPTION

• PDS (POWER DISTRIBUTION SYSTEM) is the system that BCM controls with the operation of the push-

button ignition switch and performs the power distribution to each power circuit. This system is used instead

of the mechanical power supply changing mechanism with the operation of the conventional key cylinder.

• The push-button ignition switch can be operated when Intelligent Key is in the following condition. Refer to

Hybrid System Start Function for details.

- Intelligent Key is in the detection area of the interior antenna

- Insert Intelligent Key in to the key slot

• The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply posi-

tion according to the status and operates the following relays to supply power to each power circuit.

- Ignition relay-1 (inside IPDM E/R)

- Ignition relay-2 [inside fuse block (J/B)]

- ACC relay

- Blower fan relay

NOTE:

The hybrid system switch operation changes due to the conditions of brake pedal, ECVT selector lever and

vehicle speed.

• The power supply position can be confirmed with the lighting of the indicators near the push-button ignition

switch.

PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE

The power supply position changing operation can be performed with the following operation.

NOTE:

• When an Intelligent Key is within the detection area of inside key antenna and when it is inserted in to the

key slot, it is equivalent to the operations below.

• When starting the hybrid system, the BCM monitors under the hybrid system start conditions,

- Brake pedal operating condition

- ECVT selector lever position

- Vehicle speed

• Unless each start condition is fulfilled, the hybrid system will not respond regardless of how many times the

push-button ignition switch is pressed. At that time, illumination repeats the position in the order of LOCK-

→ACC→ON→OFF.

Switch

Input Signal to BCM

BCM system

Actuator

Push-button ignition switch

Push switch

Power distribution system

• Ignition relay (IPDM E/R)
• Ignition relay (fuse block)
• ACC relay
• Blower relay

ECVT device

P range

PNP switch

N, P range

Stop lamp switch

Brake ON/OFF

Power supply position

Hybrid System start/stop condition

Push-button ignition switch op-

eration frequency

Brake pedal

ECVT selector lever position

LOCK

→ACC

Not depressed

Any position

LOCK

→ACC→ON

Not depressed

Any position

LOCK

→ACC→ON→OFF

Not depressed

Any position

LOCK

→START

ACC

→START

(Hybrid system start)

Depressed

P or N position (*1)

[If the switch is pressed once,

the hybrid system starts from

any power supply position

(LOCK, ACC, and ON)]

Content .. 848 849 850 851 ..