Nissan Altima HL32 Hybrid. Manual - part 339

 

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Nissan Altima HL32 Hybrid. Manual - part 339

 

 

EC-340

< COMPONENT DIAGNOSIS >

[QR25DE]

P1421 COLD START CONTROL

P1421 COLD START CONTROL

Description

INFOID:0000000004211581

ECM controls ignition timing and engine speed when engine is started with prewarming up condition.

This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.

DTC Logic

INFOID:0000000004211582

DTC DETECTION LOGIC

NOTE:

If DTC P1421 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Set selector lever to P position.

3. Turn ignition switch ON.

4. Make sure that air conditioner switch and electric load switches (lights, heater fan, rear window defogger)

are OFF.

5. Select “DATA MONITOR” mode with CONSULT-III.

6. Check that the “COOLAN TEMP/S” indication is between 4

°C (39°F) and 36°C (97°F).

If “COOLAN TEMP/S” indication is within the specified value, go to the following step.

If “COOLAN TEMP/S” indication is out of the specified value, cool engine down or warm engine up and go

to step 1.

7. Confirm that the “SOC” indication in “DATA MONITOR” mode of “HYBRID SYSTEM” is between 40 and

70 %.

8. Turn ignition switch ON (READY) and wait for 70 seconds.

9. Check 1st trip DTC.

With GST

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Set selector lever to P position.

3. Turn ignition switch ON.

4. Make sure that air conditioner switch and electric load switches (lights, heater fan, rear window defogger)

are OFF.

5. Check engine coolant temperature with Service $01 of GST and confirm that the indication is between

4

°C (39°F) and 36°C (97°F).

If the indication is within the specified value, go to the following step.

If the indication is out of the specified value, cool engine down or warm engine up and go to step 1.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1421

Cold start emission reduction 
strategy monitoring

ECM does not control ignition timing and engine 
speed properly when engine is started with pre-
warming up condition.

• Lack of intake air volume
• Fuel injection system
• ECM

P1421 COLD START CONTROL

EC-341

< COMPONENT DIAGNOSIS >

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6. Check high voltage battery status meter in combination meter

and confirm that the indication is between 40 and 70 % as

shown in the figure.

7. Turn ignition switch ON (READY) and wait for 70 seconds.

8. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Go to 

EC-341, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004211583

1.

PERFORM IDLE AIR VOLUME LEARNING

Perfor

EC-16, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 2.

NO

>> Follow the instruction of Idle Air Volume Learning.

2.

CHECK INTAKE SYSTEM

Check for the cause of intake air volume lacking. Refer to the following.

• Crushed intake air passage

• Intake air passage clogging
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning part

3.

CHECK FUEL INJECTION SYSTEM FUNCTION

Perform DTC CONFIRMATION PROCEDURE for DTC P0171. Refer to 

EC-224, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Go to 

EC-225, "Diagnosis Procedure"

 for DTC P0171.

4.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Turn ignition switch ON.

2. Select “SELF DIAG RESULTS” mode with CONSULT-III.

3. Touch “ERASE”.

4. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-340, "DTC Logic"

.

With GST

1. Turn ignition switch ON.

2. Select Service $04 with GST.

3. Perform DTC CONFIRMATION PROCEDURE.

See 

EC-340, "DTC Logic"

.

Is the 1st trip DTC P1421 displayed again?

YES

>> GO TO 5.

NO

>> INSPECTION END

5.

REPLACE ECM

1. Replace ECM.

2. Go to

EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment"

 .

>> INSPECTION END

JMBIA1063GB

EC-342

< COMPONENT DIAGNOSIS >

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P1564 ASCD STEERING SWITCH

P1564 ASCD STEERING SWITCH

Description

INFOID:0000000004211584

ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation

of switch, and determines which button is operated.

Refer to 

EC-45, "System Description"

 for the ASCD function.

DTC Logic

INFOID:0000000004211585

DTC DETECTION LOGIC

NOTE:

If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-318, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test. 

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 10 seconds.

2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.

3. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.

4. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-

onds.

5. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.

6. Check DTC.
Is DTC detected?

YES

>> Go to 

EC-342, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004211586

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-45, "Circuit Inspection"

Is the inspection result normal?

YS

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ASCD STEERING SWITCH CIRCUIT

 With CONSULT-III

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1564

ASCD steering switch

• An excessively high voltage signal from the 

ASCD steering switch is sent to ECM.

• ECM detects that input signal from the 

ASCD steering switch is out of the specified 
range.

• ECM detects that the ASCD steering switch 

is stuck ON.

• Harness or connectors

(The switch circuit is open or shorted.)

• ASCD  steering  switch
• ECM

P1564 ASCD STEERING SWITCH

EC-343

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1. Turn ignition switch ON.

2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with

CONSULT-III.

3. Check each item indication under the following conditions.

 Without CONSULT-III

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 3.

3.

CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect combination switch harness connector M88.

4. Check the continuity between combination switch and ECM harness connector.

5. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors M1, E30

• Combination switch (spiral cable)

Monitor item

Condition

Indication

MAIN SW

MAIN switch

Pressed

ON

Released

OFF

CANCEL SW

CANCEL switch

Pressed

ON

Released

OFF

RESUME/ACC SW

RESUME/ACCELERATE switch

Pressed

ON

Released

OFF

SET SW

SET/COAST switch

Pressed

ON

Released

OFF

ECM

Ground

Condition

Voltage

Connector

Terminal

E10

85

(ASCD 

steering 

switch sig-

nal)

Ground

MAIN switch: Pressed

Approx. 0 V

CANCEL switch: Pressed

Approx. 1 V

SET/COAST switch: Pressed

Approx. 2 V

RESUME/ACCELERATE 
switch: Pressed

Approx. 3 V

All ASCD steering switches: 
Released

Approx. 4 V

PBIB3600E

Combination 

switch

ECM

Continuity

Terminal

Connector

Terminal

16

E10

92

Existed

 

 

 

 

 

 

 

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