Nissan Leaf. Manual - part 1177

TM-114

< DTC/CIRCUIT DIAGNOSIS >

[ELECTRIC SHIFT]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000010119634

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, power switch OFF and wait for at least

10 seconds, then perform the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Power switch OFF to ON and wait for 5 seconds or more.

2. Check DTC.
Is “U1010” detected? 

YES

>> Go to 

TM-114, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010119635

1.

REPLACE VCM

Replace the VCM due to malfunction in the electric shift control module built in VCM. Refer to 

EVC-423,

"Removal and Installation"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible cause

U1010

CONTROL UNIT (CAN)
(Control Module Malfunction)

Malfunction is detected in the CAN communication 
initial diagnosis (control module malfunction).

Electric shift control module

U1086 CAN ERROR

TM-115

< DTC/CIRCUIT DIAGNOSIS >

[ELECTRIC SHIFT]

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U1086 CAN ERROR

DTC Logic

INFOID:0000000010119636

DTC DETECTION LOGIC

DTC DETECTION LOGIC

1.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, power switch OFF and wait for at least

10 seconds, then perform the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Power switch OFF to ON and wait for 5 seconds or more.

2. Check DTC.
Is “U1086” detected? 

YES

>> Go to 

TM-115, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010119637

Go to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible cause

U1086

CAN ERROR
(CAN Error)

The inability to transmit or receive data is de-
tected after the power switch is turned OFF.

Electric shift control module

TM-116

< DTC/CIRCUIT DIAGNOSIS >

[ELECTRIC SHIFT]

SELECTOR INDICATOR CIRCUIT

SELECTOR INDICATOR CIRCUIT

Component Function Check

INFOID:0000000010119638

1.

CHECK SELECTOR INDICATOR FUNCTION

1. Set the vehicle to READY.

2. Shift the selector lever.

3. Check that the illuminated position of the selector indicator in the finisher area corresponds to the selected

shift position.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

TM-116, "Diagnosis Procedure"

.

2.

CHECK SELECTOR INDICATOR ILLUMINATION FUNCTION

1. Turn ON the headlamp.

2. Check selector indicator illumination lights up.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

TM-116, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010119639

1.

DETECT MALFUNCTION

Which is malfunctioning part?

Selector indicator illumination>>GO TO 2.

Selector indicator>>GO TO 7.

2.

CHECK SELECTOR INDICATOR ILLUMINATION POWER SUPPLY-1

1. Turn OFF the headlamp.

2. Turn ignition switch OFF.

3. Disconnect selector indicator harness connector.

4. Turn ignition switch ON.

5. Turn ON the headlamp.

6. Check the voltage between selector indicator vehicle side harness connector terminals.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-53, "Intermittent Incident"

. If OK, replace selector indica-

tor. Refer to 

TM-125, "Removal and Installation"

.

NO

>> GO TO 3.

3.

CHECK SELECTOR INDICATOR ILLUMINATION POWER SUPPLY-2

Check the voltage between selector indicator vehicle side harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 4.

Selector indicator

Voltage

Connector

+

−

Terminal

M56

5

4

9 – 16 V

+

−

Voltage

Selector indicator

Connector

Terminal

M56

5

Ground

9 – 16 V

SELECTOR INDICATOR CIRCUIT

TM-117

< DTC/CIRCUIT DIAGNOSIS >

[ELECTRIC SHIFT]

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4.

CHECK FUSE

1. Turn OFF the headlamp.

2. Turn ignition switch OFF.

3. Pull out #46 fuse. Refer to 

PG-87, "How To Check"

.)

4. Check that the fuse is not fusing.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace the fuse after repair the applicable circuit.

5.

CHECK CIRCUIT BETWEEN SELECTOR INDICATOR AND IPDM E/R

1. Disconnect IPDM E/R harness connector.

2. Check the continuity between IPDM E/R vehicle side harness connector and selector indicator vehicle

side harness connector.

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

YES

>> Perform IPDM E/R auto active test and check tail lamp relay operation. Refer to 

PCS-11, "Diagno-

sis Description"

.

NO

>> Repair or replace damaged parts.

6.

CHECK GROUND CIRCUIT

1. Turn OFF the headlamp.

2. Turn ignition switch OFF.

3. Disconnect combination meter harness connector.

4. Check the continuity between combination meter vehicle side harness connector and selector indicator

vehicle side harness connector.

Is the inspection result normal?

YES

>> Check the combination meter. Refer to 

MWI-54, "Reference Value"

.

NO

>> Repair or replace damaged parts.

7.

CHECK SELECTOR INDICATOR POWER SUPPLY CIRCUIT

1. Disconnect the selector indicator connector.

2. Check the voltage between selector indicator vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

DETECT MALFUNCTION ITEMS

Check the following items.

• 10A fuse (#12) (Refer to 

PG-87, "How To Check"

.)

• 12V battery

• Harness for short or open between selector indicator vehicle side harness connector and 12V battery.

+

−

Continuity

IPDM E/R

Selector indicator

Connector

Terminal

Connector

Terminal

E14

38

M56

5

Existed

Combination meter

Selector indicator

Continuity

Connector

Terminal

Connector

Terminal

M34

26

M56

4

Existed

Selector indicator

Ground

Voltage

Connector

Terminal

M56

2

Ground

9 – 16 V