Nissan Altima HL32 Hybrid. Manual — part 850
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PCS
DIAGNOSIS AND REPAIR WORKFLOW
PCS-41
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
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1.
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
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
3.
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
4.
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
5.
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
NO
>> Refer to
GI-42, "Intermittent Incident"
.
6.
PERFORM BASIC INSPECTION
Perform basic inspection. Refer to
PCS-42, "Pre-Inspection for Multi-System Diagnostic"
Inspection End>>GO TO 7
7.
DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE
Detect malfunctioning system according to
based on the confirmed symptom in
step 4, and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 8
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PCS-42
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
8.
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
NO
>> Check voltage of related BCM terminals using CONSULT-III.
9.
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.
1.
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.
NO
>> Refer to
2.
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.
NO
>> Refer to
.
3.
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.
NO
>> Refer to
DLK-69, "Component Function Check"
.
4.
CHECK POWER SUPPLY INDICATOR SWITCHING
PCS
DIAGNOSIS AND REPAIR WORKFLOW
PCS-43
< BASIC INSPECTION >
[POWER DISTRIBUTION SYSTEM]
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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.
NO
>> Refer to
PCS-73, "Component Function Check"
5.
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.
NO
>> Repair vehicle security system as necessary.
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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
1
LOCK
→ACC→ON
Not depressed
Any position
2
LOCK
→ACC→ON→OFF
Not depressed
Any position
3
LOCK
→START
ACC
→START
ON
→START
(Hybrid system start)
Depressed
P or N position (*1)
1
[If the switch is pressed once,
the hybrid system starts from
any power supply position
(LOCK, ACC, and ON)]
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