Nissan Murano Z50 (2003 year). Manual - part 117

 

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Nissan Murano Z50 (2003 year). Manual - part 117

 

 

DTC P2138 APP SENSOR

EC-591

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Wiring Diagram

ABS004O5

TBWA0716E

EC-592

DTC P2138 APP SENSOR

Revision; 2004 April

2003 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS004O6

1. 

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch “OFF”.

2.

Loosen and retighten engine ground screws.

>> GO TO 2.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

47

G

Sensors' power supply 
(Throttle position sensor)

[Ignition switch “ON”]

Approximately 5V

82

B

Sensors' ground
(APP sensor 1)

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

83

G

Sensors' ground
(APP sensor 2)

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

90

R/W

Sensors' power supply
(APP sensor 1)

[Ignition switch “ON”]

Approximately 5V

91

P

Sensors' power supply
(APP sensor 2)

[Ignition switch “ON”]

Approximately 5V

98

W/R

Accelerator pedal position 
sensor 2

[Ignition switch "ON"]

Engine stopped

Accelerator pedal fully released

0.25 - 0.50V

[Ignition switch "ON"]

Engine stopped

Accelerator pedal fully depressed

2.0 - 2.5V

106

W

Accelerator pedal position 
sensor 1

[Ignition switch "ON"]

Engine stopped

Accelerator pedal fully released

0.5 - 1.0V

[Ignition switch "ON"]

Engine stopped

Accelerator pedal fully depressed

4.2 - 4.8V

PBIB1298E

DTC P2138 APP SENSOR

EC-593

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2. 

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position (APP) sensor harness
connector.

2.

Turn ignition switch “ON”.

3.

Check voltage between APP sensor terminals 4 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> Repair open circuit or short to ground or short to power

in harness or connectors.

3. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

Check voltage between APP sensor terminal 2 and ground with
CONSULT-II or tester. 

1.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 4.

4. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch “OFF”.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between APP sensor terminal 2 and ECM terminal 91.
Refer to wiring diagram.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace open circuit.

PBIB1366E

Voltage: Approximately 5V

PBIB1393E

Voltage: Approximately 5V

PBIB1394E

Continuity should exist.

EC-594

DTC P2138 APP SENSOR

Revision; 2004 April

2003 Murano

5. 

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III

Check harness for short to power and short to ground, between the following terminals.

OK or NG

OK

>> GO TO 6.

NG

>> Repair short to ground or short to power in harness or connectors.

6. 

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-588, "Component Inspection"

 .

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 7.

7. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace electric throttle control actuator.

2.

Perform

EC-64, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-64, "Idle Air Volume Learning"

 .

>> INSPECTION END

8. 

CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch “OFF”.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between APP sensor terminal 3 and ECM terminal 83, APP sensor terminal 5
and ECM terminal 82.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 9.

NG

>> Repair open circuit or short to power or short to power in harness or connectors.

9. 

CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check harness continuity between ECM terminal 106 and APP sensor terminal 1, ECM terminal 98 and
APP sensor terminal 6.
Refer to Wiring Diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 10.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

ECM terminal

Sensor terminal

Reference Wiring Diagram

91

APP sensor terminal 2

EC-591

47

Electric throttle control actuator terminal 1

EC-584

Continuity should exist.

Continuity should exist.

DTC P2138 APP SENSOR

EC-595

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10. 

CHECK APP SENSOR

Refer to 

EC-595, "Component Inspection"

 .

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11. 

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly.

2.

Perform

EC-63, "Accelerator Pedal Released Position Learning"

 .

3.

Perform 

EC-64, "Throttle Valve Closed Position Learning"

 .

4.

Perform 

EC-64, "Idle Air Volume Learning"

 .

>> INSPECTION END

12. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS004O7

ACCELERATOR PEDAL POSITION SENSOR

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch “ON”.

3.

Check voltage between ECM terminals 106 (APP sensor 1 sig-
nal), 98 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.

4.

If NG, replace accelerator pedal assembly and go to next step.

5.

Perform 

EC-63, "Accelerator Pedal Released Position Learning"

 .

6.

Perform 

EC-64, "Throttle Valve Closed Position Learning"

 .

7.

Perform 

EC-64, "Idle Air Volume Learning"

 .

Removal and Installation

ABS004O8

ACCELERATOR PEDAL

Refer to 

ACC-2, "ACCELERATOR CONTROL SYSTEM"

 .

Terminal

Accelerator pedal

Voltage

106
 (Accelerator pedal position 
sensor 1)

Fully released

0.5 - 1.0V

Fully depressed

4.2 - 4.8V

98
(Accelerator pedal position 
sensor 2)

Fully released

0.25 - 0.50V

Fully depressed

2.0 - 2.5V

MBIB0023E

EC-596

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

IGNITION SIGNAL

PFP:22448

Component Description

ABS004O9

IGNITION COIL & POWER TRANSISTOR

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
on and off the ignition coil primary circuit. This on-off operation induces the proper high voltage in the coil sec-
ondary circuit.

PBIB1370E

IGNITION SIGNAL

EC-597

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Revision; 2004 April

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Wiring Diagram

ABS004OA

TBWA0387E

EC-598

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

111

W/B

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch “OFF”]

For a few seconds after turning ignition 
switch “OFF”

0 - 1.5V

[Ignition switch “OFF”]

A few seconds passed after turning ignition 
switch “OFF”

BATTERY VOLTAGE
(11 - 14V)

119

120

R/B
R/B

Power supply for ECM

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

IGNITION SIGNAL

EC-599

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TBWA0388E

EC-600

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

60
61
62

BR/R
L/R
Y/R

Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1

[Engine is running]

Warm-up condition

Idle speed

0 - 0.3V

[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm.

0.1 - 0.6V

SEC986C

SEC987C

IGNITION SIGNAL

EC-601

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Revision; 2004 April

2003 Murano

TBWA0389E

EC-602

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

ABS004OB

1. 

CHECK ENGINE START

Turn ignition switch “OFF”, and restart engine.
Is engine running?
Yes or No

Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No

>> GO TO 4.

2. 

CHECK OVERALL FUNCTION

 With CONSULT-II

1.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.

2.

Make sure that each circuit produces a momentary engine
speed drop.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 10.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

79
80
81

GR/R
GR
G/R

Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]

Warm-up condition

Idle speed

0 - 0.3V

[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm.

0.1 - 0.6V

SEC986C

SEC987C

PBIB0133E

IGNITION SIGNAL

EC-603

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Revision; 2004 April

2003 Murano

3. 

CHECK OVERALL FUNCTION

 Without CONSULT-II

1.

Let engine idle.

2.

Read the voltage signal between ECM terminals 60, 61, 62, 79,
80, 81 and ground with an oscilloscope.

3.

Verify that the oscilloscope screen shows the signal wave as
shown below.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 10.

4. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

2.

Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.

OK or NG

OK

>> GO TO 5.

NG

>> Go to 

EC-152, "POWER SUPPLY CIRCUIT FOR ECM"

.

PBIB1186E

SEC986C

Voltage: Battery voltage

MBIB0034E

EC-604

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

5. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch “OFF”.

2.

Disconnect condenser harness connector.

3.

Turn ignition switch “ON”.

4.

Check voltage between condenser terminal 1 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 6.

6. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check harness continuity between IPDM E/R terminal 35 and condenser terminal 1.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 17.

NG

>> GO TO 7.

7. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E19, F3

Harness for open or short between IPDM E/R and condenser

>> Repair open circuit or short to ground or short to power in harness or connectors.

PBIB1371E

Voltage: Battery voltage

PBIB0624E

Continuity should exist.

IGNITION SIGNAL

EC-605

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8. 

CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check harness continuity between condenser terminal 2 and engine ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 9.

NG

>> Repair open circuit or short to power in harness or connectors.

9. 

CHECK CONDENSER

Refer to 

EC-607, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Replace condenser.

10. 

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Disconnect ignition coil harness connector.

4.

Turn ignition switch ON.

5.

Check voltage between ignition coil terminal 3 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors F32, F221

Harness for open or short between ignition coil and harness connector F3

>> Repair or replace harness or connectors.

Continuity should exist.

Voltage: Battery voltage

PBIB1370E

PBIB0138E

EC-606

IGNITION SIGNAL

Revision; 2004 April

2003 Murano

12. 

CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 14.

NG

>> GO TO 13.

13. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors F221, F32

Harness for open or short between ignition coil and engine ground

>> Repair open circuit or short to power in harness or connectors.

14. 

CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminals 60, 61, 62, 79, 80, 81 and ignition coil terminal 1.
Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

15. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors F32, F221

Harness for open or short between ignition coil and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

16. 

CHECK IGNITION COIL WITH POWER TRANSISTOR

Refer to 

EC-607, "Component Inspection"

 .

OK or NG

OK

>> GO TO 17.

NG

>> Replace ignition coil with power transistor.

17. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> Replace IPDM E/R.

NG

>> Repair open circuit or short to ground or short to power in harness connectors.

Continuity should exist.

Continuity should exist.

 

 

 

 

 

 

 

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