Nissan Leaf. Manual - part 933

LAN-194

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

OBC/PD MODULE BRANCH LINE CIRCUIT

OBC/PD MODULE BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415448

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the PDM (Power Delivery Module) for damage, bend and loose

connection (unit side and connector side).

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 PDM (Power Delivery Module).

2. Check the resistance between the PDM (Power Delivery Module) harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the PDM (Power Delivery Module) branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the PDM (Power Delivery Module). Refer to 

VC-54, "PDM

(POWER DELIVERY MODULE) : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the PDM (Power Delivery Module). Refer to 

VC-112, "Removal and Installa-

tion"

.

YES (Past error)>>Error was detected in the PDM (Power Delivery Module) branch line.

NO

>> Repair the power supply and the ground circuit.

PDM (Power Delivery Module) harness connector

Resistance (

Ω)

Connector No.

Terminal No.

F23

27

11

Approx. 54 – 66

LAN

DLC BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

LAN-195

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

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DLC BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

Diagnosis Procedure

INFOID:0000000010415449

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery 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 (Present error)>>Diagnose again. Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

YES (Past error)>>Error was detected in the data link connector branch line circuit (EV system CAN circuit

side).

NO

>> Repair the data link connector branch line (EV system CAN circuit side).

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M4

13

12

Approx. 54 – 66

LAN-196

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

HVAC BRANCH LINE CIRCUIT

HVAC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415450

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit

side and connector side).

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 A/C auto amp.

2. Check the resistance between the A/C auto amp. harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the A/C auto amp. branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp. Refer to the following.

• Auto A/C (With heat pump): 

HAC-173, "A/C AUTO AMP. : Diagnosis Procedure"

• Auto A/C (Without heat pump): 

HAC-333, "A/C AUTO AMP. : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp. Refer to the following.

• Auto A/C (With heat pump): 

HAC-187, "Removal and Installation"

• Auto A/C (Without heat pump): 

HAC-347, "Removal and Installation"

YES (Past error)>>Error was detected in the A/C auto amp. branch line.

NO

>> Repair the power supply and the ground circuit.

A/C auto amp. harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M55

28

29

Approx. 54 – 66

LAN

TCU BRANCH LINE CIRCUIT

LAN-197

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

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TCU BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415451

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the TCU for damage, bend and loose connection (unit side and

connector side).

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 TCU.

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

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the TCU branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

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

AV-590, "TCU : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the TCU. Refer to 

AV-594, "Removal and Installation"

.

YES (Past error)>>Error was detected in the TCU branch line.

NO

>> Repair the power supply and the ground circuit.

TCU harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M67

9

10

Approx. 54 – 66