Nissan Altima HL32 Hybrid. Manual - part 779

LAN-70

< COMPONENT DIAGNOSIS >

[HEV SYSTEM CAN]

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000004219068

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

-

Harness connector M89

-

Harness connector E64

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors M89 and E64.

2. Check the continuity between the data link connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the data link connector and the harness connector M89.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the connector of brake ECU.

2. Check the continuity between the harness connector and the brake ECU harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the main line between the harness connector E64 and the brake ECU.

4.

ERASE ALL DTC

1. Connect all the connectors.

2. Erase the DTCs of unit connected to HEV SYSTEM CAN and CAN.

3. Turn the ignition switch OFF.

4. Turn the ignition switch ON. 

5. Perform All DTC Reading with CONSULT-III.

NOTE:

For DTCs related to HEV SYSTEM CAN, refer to 

LAN-59, "DTC Related to HEV SYSTEM CAN List"

.

Is the DTC related to HEV SYSTEM CAN displayed?

YES

>> Reconfirm the procedure for detecting root cause.

NO

>> Error was detected in the main line between the data link connector and the brake ECU.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

13

M89

5

Existed

12

4

Existed

Harness connector

Brake ECU harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E64

5

E61

81

Existed

4

70

Existed

LAN

ECM BRANCH LINE CIRCUIT

LAN-71

< COMPONENT DIAGNOSIS >

[HEV SYSTEM CAN]

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ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004219069

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-

nector side).

-

ECM

-

Harness connector F80

-

Harness connector E68

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of ECM.

2. Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ECM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM. Refer to 

EC-114, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the power supply and the ground circuit.

4.

ERASE ALL DTC

1. Connect the connector of ECM.

2. Erase the DTCs of unit connected to HEV SYSTEM CAN and CAN.

3. Turn the ignition switch OFF.

4. Turn the ignition switch ON. 

5. Perform All DTC Reading with CONSULT-III.

NOTE:

For DTCs related to HEV SYSTEM CAN, refer to 

LAN-59, "DTC Related to HEV SYSTEM CAN List"

.

Is the DTC related to HEV SYSTEM CAN displayed?

YES

>> Replace the ECM. Refer to 

EC-14, "ADDITIONAL SERVICE WHEN REPLACING CONTROL

UNIT : Special Repair Requirement"

.

NO

>> Error was detected in the ECM branch line.

ECM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

F13

74

73

Approx. 108 – 132

LAN-72

< COMPONENT DIAGNOSIS >

[HEV SYSTEM CAN]

EPS BRANCH LINE CIRCUIT

EPS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004219070

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-

nector side).

-

EPS control unit

-

Harness connector E301

-

Harness connector E67

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of EPS control unit.

2. Check the resistance between the EPS control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the EPS control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the EPS control unit. Refer to 

STC-44, "Wiring Diagram —

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM —"

.

Is the inspection result normal?

YES 

>> GO TO 4.

NO

>> Repair the power supply and the ground circuit.

4.

ERASE ALL DTC

1. Connect the connector of EPS control unit.

2. Erase the DTCs of unit connected to HEV SYSTEM CAN and CAN.

3. Turn the ignition switch OFF.

4. Turn the ignition switch ON. 

5. Perform All DTC Reading with CONSULT-III.

NOTE:

For DTCs related to HEV SYSTEM CAN, refer to 

LAN-59, "DTC Related to HEV SYSTEM CAN List"

.

Is the DTC related to HEV SYSTEM CAN displayed?

YES

>> Replace the EPS control unit. Refer to 

STC-8, "Component Parts Location"

.

NO

>> Error was detected in the EPS control unit branch line.

EPS control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E302

8

9

Approx. 54 – 66

LAN

DLC BRANCH LINE CIRCUIT

LAN-73

< COMPONENT DIAGNOSIS >

[HEV SYSTEM CAN]

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DLC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004219071

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the terminals and connectors of the data link connector for damage, bend and loose connection

(connector side and harness side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES 

>> Reconfirm the procedure for detecting root cause.

NO

>> Repair the data link connector branch line.

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M22

13

12

Approx. 54 – 66