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Nissan Leaf. Manual - part 582

EVC-352

< DTC/CIRCUIT DIAGNOSIS >

P31E5 VCM POWER SUPPLY

>> Repair or replace error-detected parts.

CHECK 12V BATTERY POWER SUPPLY

Check the voltage between #77 fuse terminal and ground.

Is the inspection result normal?

YES

>> GO TO 5.

>> Perform trouble diagnosis for 12V battery power supply.

CHECK 12V BATTERY POWER SUPPLY CIRCUIT

1. Disconnect VCM harness connector.

2. Check the continuity between #77 fuse terminal and VCM harness connector.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

>> Repair or replace error-detected parts.

CHECK FUSE

1. Turn power switch ON.

2. Pull out #43 fuse and check that the fuse is not fusing.
Is the inspection result normal?

YES

>> GO TO 9.

>> GO TO 7.

CHECK 12V BATTERY POWER SUPPLY CIRCUIT

1. Disconnect IPDM E/R harness connector.

2. Disconnect VCM harness connector.

3. Check harness for short to ground, between IPDM E/R harness connector and VCM harness connector.

Is the inspection result normal?

YES

>> GO TO 8.

>> Repair or replace error-detected parts.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-29, "Removal and Installation"

>> Repair or replace error-detected parts.

CHECK 12V BATTERY POWER SUPPLY-1

1. Insert the fuse which pulled out.

2. Check the voltage between IPDM E/R harness connector and ground.

−

Voltage

#77 fuse terminal

Ground

12V battery voltage

−

Continuity

VCM

Connector

Terminal

#77 fuse termi-

nal

E62

Existed

−

Continuity

IPDM E/R

Connector

Terminal

E14

Ground

Not existed

P31E5 VCM POWER SUPPLY

EVC-353

< DTC/CIRCUIT DIAGNOSIS >

EVC

Is the inspection result normal?

YES

>> GO TO 11.

>> GO TO 10.

10.

CHECK 12V BATTERY POWER SUPPLY-2

Check IPDM E/R power supply circuit. Refer to

PCS-28, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-29, "Removal and Installation"

>> Repair or replace error-detected parts.

11.

CHECK 12V BATTERY POWER SUPPLY CIRCUIT

1. Disconnect IPDM E/R harness connector.

2. Disconnect VCM harness connector.

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

4. Also check harness for short to ground.
Is the inspection result normal?

YES

>> GO TO 12.

>> Repair or replace error-detected parts.

12.

CHECK VCM GROUND CIRCUIT

Check the continuity between VCM harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

>> Repair or replace error-detected parts.

−

Voltage

IPDM E/R

Connector

Terminal

E14

Ground

12V battery voltage

−

Continuity

IPDM E/R

VCM

Connector

Terminal

Connector

Terminal

E14

E122

Existed

−

Continuity

VCM

Connector

Terminal

E61

Ground

Existed

E62

118

126

EVC-354

< DTC/CIRCUIT DIAGNOSIS >

P31E7 RESTART INHIBITION

P31E7 RESTART INHIBITION

DTC Logic

INFOID:0000000010120816

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

INSPECTION START

NOTE:

This DTC is displayed when VCM detects DTC “P0AA6”. If this DTC displayed, perform trouble diagnosis for

DTC “P0AA6”.

>> Proceed to

EVC-354, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010120817

Perform trouble diagnosis for DTC “P0AA6”. Refer to

EVC-177, "DTC Logic"

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P31E7

RESTART INHIBITION
(Restart inhibition)

VCM detects DTC “P0AA6”.

VCM detects DTC
“P0AA6”.

P31E8 WATER PUMP

EVC-355

< DTC/CIRCUIT DIAGNOSIS >

EVC

P31E8 WATER PUMP

DTC Logic

INFOID:0000000010120818

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

• Turn power switch OFF and wait at least 90 seconds.

CAUTION:

During this period, never perform vehicle handling such as opening and closing of doors. If some

kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the

vehicle handling.

• Make sure that 12V battery voltage is 11 V or more.

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch OFF and wait at least 60 seconds.

2. Set the vehicle to READY and wait at least 60 seconds.

3. Check DTC.
Is DTC detected?

YES

>> Proceed to

EVC-355, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120819

CHECK SELF-DIAGNOSTIC RESULT IN VCM

Check self-diagnostic result in “EV/HEV”.
Is DTC detected other than P31E8?

YES

>> Perform diagnosis procedure of detected DTC. Refer to

EVC-102, "DTC Index"

>> GO TO 2.

CHECK WATER PUMP FEEDBACK DUTY-1

With CONSULT

1. Set the vehicle to READY.

2. On the CONSULT screen, select “EV/HEV” >> “DATA MONITOR” >> “W/P 1 CRNT SPD DUTY”.

3. Check “W/P 1 CRNT SPD DUTY” value.
Is value more than 91%?

YES

>> GO TO 5.

>> GO TO 3.

CHECK WATER PUMP FEEDBACK DUTY-2

With CONSULT

Check “W/P 1 CRNT SPD DUTY” value.
Is value less than 3%?

YES

>> GO TO 5.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P31E8

WATER PUMP 1
(Water pump 1)

Electric water pump feedback duty keeps either of the following
conditions for 30 seconds.
• Less than 3%
• 91% or more
• Between 13% and 17%

• Harness or connectors
• Electric water pump
• VCM

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