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
.
• Regarding items of DTC sub type, refer to
.
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)
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