Nissan X-Trail 32. Manual - part 861

 

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Nissan X-Trail 32. Manual - part 861

 

 

POWER SUPPLY AND GROUND CIRCUIT

EC-573

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

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POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000010986290

1.

CHECK FUSE

Check that the following fuse is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 2.

2.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection F6 or F9. Refer to 

GI-46, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace ground connection.

3.

CHECK ECM GROUND CIRCUIT

1.

Disconnect ECM harness connectors.

2.

Check the continuity between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK ECM POWER SUPPLY (MAIN)-1

1.

Reconnect ECM harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between ECM harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 6.

5.

CHECK ECM POWER SUPPLY (MAIN)--2

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Check the voltage between ECM harness connector terminals as per the following.

Location

Fuse No.

Capacity

IPDM E/R

#95

5 A

#82

15 A

+

Continuity

ECM

Connector

Terminal

F68

52

Ground

Existed

F85

16

E60

123

128

ECM

Voltage

Connector

+

Terminal

E60

121

128

Battery voltage

EC-574

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

POWER SUPPLY AND GROUND CIRCUIT

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 7.

6.

CHECK ECM POWER SUPPLY (MAIN) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connectors.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

5.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

7.

CHECK ECM RELAY CONTROL SIGNAL

Check the voltage between ECM harness connector terminals as per the following.

Is the inspection result normal?

YES

>> Check Intermittent Incident. Refer to 

GI-44, "Intermittent Incident"

.

NO

>> GO TO 8.

8.

CHECK ECM RELAY CONTROL SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

5.

Also check harness for short to ground and to power.

Is the inspection result normal?

ECM

Condition

Voltage

(Approx.)

Connector

+

Terminal

E60

121

128

After turning ignition switch 
OFF, battery voltage will ex-
ist for a few seconds

Drop to 0 V

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

E60

121

F72

73

Existed

ECM

Condition

Voltage

(Approx.)

+

Connector

Terminal

Connector

Terminal

F68

89

E60

128

Ignition switch ON 

0 V

Turn ignition switch OFF 
and wait at least 10 sec-
onds.

Battery voltage

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

F68

89

F74

93

Existed

POWER SUPPLY AND GROUND CIRCUIT

EC-575

< DTC/CIRCUIT DIAGNOSIS >

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YES

>> Replace IPDM E/R. Refer to 

PCS-60, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

9.

CHECK IGNITION SWITCH SIGNAL

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals.

Is the inspection result normal?

YES

>> Check Intermittent Incident. Refer to 

GI-44, "Intermittent Incident"

.

NO

>> GO TO 10.

10.

CHECK IGNITION SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

5.

Also check harness for short to ground and to power.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

ECM

Condition

Voltage

(Approx.)

Connector

+

Terminal

E60

109

128

Ignition switch OFF

0 V

Ignition switch ON

Battery voltage

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

E60

109

E12

25

Existed

EC-576

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

U0101 CAN COMM CIRCUIT

U0101 CAN COMM CIRCUIT

Description

INFOID:0000000010986291

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

DTC Description

INFOID:0000000010986292

DTC DETECTION LOGIC

POSSIBLE CAUSE

CAN communication line between TCM and ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 3 seconds.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-576, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010986293

Perform the trouble diagnosis for CAN communication system. Refer to 

LAN-17, "Trouble Diagnosis Flow

Chart"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

U0101

LOST COMM (TCM)
(Lost communication with TCM)

When ECM is not transmitting or receiving CAN communication signal of 
OBD (emission-related diagnosis) with TCM for 2 seconds or more.

 

 

 

 

 

 

 

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