Nissan Leaf. Manual - part 1215

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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< SYSTEM DESCRIPTION >

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ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

INFOID:0000000010121219

This system is an on board diagnostic system that detects a malfunction automatically. A malfunction is stored

in PDM (Power Delivery Module) memory as a DTC. The diagnostic information can be obtained with CON-

SULT.

Counter System

INFOID:0000000010121220

Counter system counts up at every operation of power switch from OFF to ON under condition that the same

malfunction is not detected. On the other hand, if the same DTC as memorized one is detected again, the

count is reset and the counter system counts up again from “0”.

DTC and Freeze Frame Data

INFOID:0000000010121221

The PDM (Power Delivery Module) can save multiple DTC but can only save one freeze frame data. 

After the PDM (Power Delivery Module) has detected a malfunction and saves the DTC and freeze frame

data, if a different malfunction is detected, multiple DTC are confirmed, but only the freeze frame data that is

saved first can be confirmed. 

The DTC and freeze frame data can be deleted when the self-diagnostic is deleted. 

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM [PDM(POWER DELIVERY MODULE)]

DIAGNOSIS SYSTEM [PDM(POWER DELIVERY MODULE)]

CONSULT Function

INFOID:0000000010121222

FUNCTION

*: The following diagnosis information is cleared when the PDM (power delivery module) memory is erased.
• Diagnostic trouble codes
• Freeze frame data

WORK SUPPORT MODE

NOTE:

If the minimum value is 7.2 A or less, the current limit display reads “Yes”, indicating that the current is limited

or charging is stopped during charging. A possible cause is insufficient contact due to damage or wear of the

EVSE plug or socket.

Change the combination of socket and EVSE that are used and perform normal charging. The malfunctioning

component can be identified by checking “CHARGE CURRENT LIMITATION HISTORY”again.

SELF-DIAG RESULTS MODE

Self Diagnostic Item

• Regarding items of DTC, refer to 

VC-34, "DTC Index"

.

• Regarding items of DTC sub type, refer to 

VC-35, "DTC Sub Type Index"

.

IGN Counter

IGN counter is displayed in Freeze Frame Data (FFD). It displays the number of operations of power switch

from OFF to ON after DTC recovery to normal.

• CAN malfunction (U1000)

- The number is 0 when a malfunction is detected now.

- The displayed number counts up at each operation of power switch from OFF to ON after recovery to nor-

mal, such as 1 

→ 2 → 3...38 → 39.

- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

• Other than CAN malfunction (Other than U1000)

- The number is 0 when a malfunction is detected now.

- The displayed number counts up at each operation of power switch from OFF to ON after recovery to nor-

mal, such as 1 

→ 2 → 3...254 → 255.

- The number is fixed to 255 until the self-diagnosis results are erased if it is over 255.

Freeze Frame Data

The Freeze Frame Data shows the status of the vehicle when the DTC is detected and is useful for recreating

the status when the malfunction occurred. 

Diagnostic test mode

Function

Work Support

This mode enables a technician to adjust some devices faster and more accurately by following the 
indications on the CONSULT.

Self-diagnostic result

Self-diagnostic results and freeze frame data can be read and erased quickly.*

Data monitor

Input/Output data in the PDM (Power Delivery Module) can be read.

Active Test

Operable under the condition that the actuator is activated by CONSULT via the PDM (Power Deliv-
ery Module) or within the range that a (some of) command value is designated.

ECU Identification

PDM (Power Delivery Module) part number can be read.

Work item

Description

CHARGE CURRENT LIMITA-
TION HISTORY

Displays the previous 10 charging current readings during normal charging, allowing the history of 
current limits and charging stops resulting from EVSE commands to be checked.

DIAGNOSIS SYSTEM [PDM(POWER DELIVERY MODULE)]

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< SYSTEM DESCRIPTION >

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DATA MONITOR MODE

NOTE:

The following table includes information (items) inapplicable to this vehicle. For information (items) applicable

to this vehicle, refer to CONSULT display items.

Freeze frame data item

Description

Q/CHG CONNECT DE-
TECT

Displays the connection status of the quick charge connector.

Q/CHG START/STOP 
SIG 1

Displays the input status of the charge start/stop signal 1 from the quick charger.

Q/CHG START/STOP 
SIG 2

Displays the input status of the charge start/stop signal 2 from the quick charger.

QUICK CHARGE PER-
MIT

Displays the transmitting status of the charge start permission signal being sent to the quick charger. 

Q/CHG RELAY +

Displays the control status of the quick charge relay (+).

Q/CHG RELAY 

−

Displays the control status of the quick charge relay (

−).

PWM SIGNAL

Displays the reception status of the PWM signal being sent from the EVSE.

EVSE STATE JUDG

Displays the engagement detection status of the EVSE charge connector.

WELD DIAG VOL

Displays the presence or absence of voltage between the high voltage terminal of the quick charge port.

PD MODULE TEMP [

°C]

Displays the PDM (Power Delivery Module) internal temperature.

EV SYS W/L REQ

Displays the status of EV system warning lamp signal transmission that is sent to the VCM.

F/S REQ

Displays the status of fail-safe request signal transmission that is sent to the VCM.

Q/CHG PORT TEMP

Displays the quick charge port temperature status.

PWM SIGNAL VOLTAGE 
[V]

Displays the voltage of a PWM signal transmitted from EVSE.

TIME

Displays the number of DTC detected trips.

ELAPSED TIME

Displays the time elapsed since the detection of the DTC. 

Monitor item

Unit

Description

Q/CHG CONNECT DETECT

CNCT/DISC-

NCT

Displays the connection status of the quick charge connector.
• CNCT: The quick charge connector is connected.
• DISCNCT: The quick charge connector is not connected.

Q/CHG START/STOP SIG 1

ON/OFF

Displays the input status of the charge start/stop signal 1 from the quick charger. 
• OFF: The quick charger start switch is OFF and not under quick charge.
• ON: The quick charger start switch ON or under quick charge.

Q/CHG START/STOP SIG 2

ON/OFF

Displays the input status of the charge start/stop signal 2 from the quick charger.
• OFF: Isolation check with a quick charger is NG or not completed.
• ON: Isolation check with a quick charger completed normally.

QUICK CHARGE PERMIT

LOW/HIGH

Displays the transmission status of the charge start permission signal being sent 
to the quick charger. 
• LOW: Allow quick charge start
• HIGH: Quick charge start is not allowed

Q/CHG RELAY +

On/Off

Displays the control status of the quick charge relay (+).
• On: Quick charge relay (+) is ON.
• Off: Quick charge relay (+) is OFF.

Q/CHG RELAY 

−

On/Off

Displays the control status of the quick charge relay (

−).

• On: Quick charge relay (

−) is ON.

• Off: Quick charge relay (

−) is OFF.

PWM SIGNAL

OK/NONE

Displays the reception status of the PWM signal being sent from the EVSE.
• COMM: Communicating normally.
• NO COM: Not communicating

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< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM [PDM(POWER DELIVERY MODULE)]

ACTIVE TEST MODE

CAUTION:

After performing active test, always erase all DTC.

*: If operating noise is hard to hear, use a sound scope to check noise.

EVSE STATE JUDG

CNCT/

INPUT/

NONE/NO 

CNCT OR ER-

ROR

Displays the engagement detection status of the normal charge connector.
• CNCT: There is no AC input in the charge connector connected status.
• INPUT: There is AC input in the charge connector connected status.
• NONE: The charge connector is not engaged or there is no PWM communi-

cation from the EVSE.

• NO CNCT OR ERROR: The charge connector is not engaged and malfunc-

tion of EVSE, or during a power outage.

WELD DIAG VOL

PRESENT/AB-

SENT

Displays the presence or absence of voltage between the high voltage terminal 
of the quick charge port.
• PRESENT: Detects voltage Between the high voltage terminal of quick charge 

port.

• ABSENT: Not detects voltage Between the high voltage terminal of quick 

charge port.

PD MODULE TEMP [

°C]

degC

Displays the PDM (Power Delivery Module) internal temperature.

EV SYS W/L REQ

On/Off

Displays the status of EV system warning lamp signal transmission that is sent 
to the VCM.
• On: Transmit the signal.
• Off: Non-transmit the signal.

F/S REQ

On/Off

Displays the status of fail-safe request signal transmission that is sent to the 
VCM.
• On: Transmit the signal.
• Off: Non-transmit the signal.

Q/CHG PORT TEMP

OK/NG

Displays the quick charge port temperature status.
• OK:  Normal
• NG: Temperature is high

PWM SIGNAL VOLTAGE

V

Displays the voltage of a PWM signal transmitted from EVSE.

QUICK CHARGE ENABLE

OK/NG

NOTE:
This item is displayed, but cannot be monitored.

Monitor item

Unit

Description

Test item

Function/Condition

Judgment

Check item (Remedy)

Q/CHG RELAY +

• Remove the service plug.
• Power  switch  ON
• Use active test to turn ON/OFF the 

quick charge relay.

Check that the quick charge 
relay makes the operating 
sound.

*

• Harness and connector
• Quick charge relay (+)
• PDM (Power Delivery Mod-

ule)

Q/CHG RELAY 

−

• Remove the service plug.
• Power  switch  ON
• Use active test to turn ON/OFF the 

quick charge relay.

Check that the quick charge 
relay makes the operating 
sound.

*

• Harness and connector
• Quick charge relay (

−)

• PDM (Power Delivery Mod-

ule)

QUICK CHARGE PERMIT

Quick charge permit signal is forcibly 
output.

Check continuity between 
PDM (Power Delivery Module) 
connector terminals to check 
that the transistor included in 
the PDM (Power Delivery 
Module) is ON.

PDM (Power Delivery Module)