Nissan Leaf. Manual — part 1185
DIAGNOSIS SYSTEM (TRACTION MOTOR INVERTER)
TMS-21
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (TRACTION MOTOR INVERTER)
DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : System Description
INFOID:0000000010120908
This is an on-board trouble diagnosis system which automatically detects malfunction. Detected malfunction is
memorized in ECU as DTC. Diagnosis information can be confirmed using CONSULT.
DIAGNOSIS DESCRIPTION : DTC and Freeze Frame Data
INFOID:0000000010120909
NOTE:
Operate the power switch from OFF to ON. This operation is defined as 1 trip.
• DTC (P0A1B, P0A8D, P0C79, etc.) is specified by SAE J2012/ISO 15031-6.
• Traction motor inverter memorizes DTC and freeze frame data when malfunction is detected.
• Traction motor inverter can memorize plural DTCs but only 1 set of freeze frame data.
• Freeze frame data is not updated even if a different DTC is detected in another trip. The first memorized data
is kept as freeze frame data.
• The procedure to erase DTC from traction motor inverter memory is described in “How to Erase DTC”. Refer
DIAGNOSIS DESCRIPTION : Counter System
INFOID:0000000010120910
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”.
CONSULT Function
INFOID:0000000010120911
APPLICATION ITEM
WORK SUPPORT
SELF DIAGNOSTIC RESULTS
Display Item List
.
How to Read DTC
DTC is displayed on “Self Diagnostic results” of CONSULT.
When DTC is currently detected, “CRNT” is displayed. If “PAST” is displayed, it shows a malfunction occurred
in the past.The trip number of drive without malfunction of concerned DTC can be confirmed with “IGN
counter” inside “FFD”.
Item
Function
All DTC Reading
Display all DTCs or diagnostic items that all ECUs are recording and judging.
Work Support
This mode enables a technician to adjust some devices faster and more accurately.
Self Diagnostic Results
Retrieve DTC from ECU and display diagnostic items.
Data Monitor
Monitor the input/output signal of the control unit in real time.
CAN Diagnosis
This mode displays a network diagnosis result about CAN by diagram.
CAN Diagnosis Support Monitor
It monitors the status of CAN communication.
ECU Identification
Display the ECU identification number (part number etc.) of the selected system.
Item
Description
RESOLVER WRITE
Performs writing of traction motor resolver offset.
CLEAR OUTPUT LIMIT REASON
Resets output limit history of traction motor and traction motor inverter.
NOTE:
Resets “OUTPUT LIMIT MOTOR TEMP” and “OUTPUT LIMIT INV TEMP” values of data
monitor.
TMS-22
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (TRACTION MOTOR INVERTER)
How to Erase DTC
NOTE:
If the power switch is kept ON after repair operation, operate the power switch to OFF. Operate the power
switch to ON again after waiting at least 10 seconds.
1. Touch “MOTOR CONTROL” of CONSULT.
2. Touch “Self Diagnostic Result”.
3. Touch “Erase”. (DTC memorized in electric traction motor inverter is erased.)
IGN Counter
IGN counter is displayed in “FFD”. It displays the number of operations of power switch from OFF to ON after
DTC recovery to normal.
• If malfunction (DTC) is currently detected, “0” is displayed.
• 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.
• When the number reaches to 40, DTC is erased.
NOTE:
The counter display of “40” cannot be checked.
FREEZE FRAME DATA (FFD)
The following vehicle status is recorded when DTC is detected and is displayed on CONSULT.
Monitored item (Unit)
Remarks
DTC
Displays the DTC which caused FFD memory
12V POWER VOLTAGE
(V) Displays 12V battery power voltage input to traction motor inverter
CODE IN INVERTER
Displays the trouble code inside traction motor inverter
RESOLVER OFFSET VALUES (1st and
2nd symbols)
Displays 1st and 2nd symbols of traction motor resolver offset value written in
traction motor inverter
DIAGNOSIS START HISTORY 1
Displays if DTC detection mode is started
DIAGNOSIS START HISTORY 2
DPA REQUEST
Displays the request status of DPA
TORQUE LIMIT RATE 1
(%) Displays the motoring torque limit rate
TORQUE LIMIT RATE 2
(%) Displays the regeneration torque limit rate
MOTOR TEMPERATURE
(
°C or °F) Displays the temperature of traction motor
MAX MOTOR TEMPERATURE
(
°C or °F) Displays the highest temperature of traction motor detected
INV INPUT HIGH VOLTAGE
(V) Displays high voltage input to traction motor inverter
COMMAND TORQUE
(Nm) Displays the torque command value from VCM via EV system CAN
INSIDE COMMAND TORQUE
(Nm) Displays the torque command value in motor controller
MOTOR SPEED
(rpm) Displays the traction motor speed
MOTOR d CURRENT
(A) Displays the detected value of current (d-axis) of traction motor
MOTOR q CURRENT
(A) Displays the detected value of current (q-axis) of traction motor
U PHASE CURRENT
(A) Displays the U-phase current detected value
V PHASE CURRENT
(A) Displays the V-phase current detected value
PHASE ANGLE
(deg) Displays the turning angle position of rotor
SEQUENCE MODE
Displays the sequence number in motor controller
CARRIER FREQUENCY
Displays the carrier frequency
IGBT HIGH TEMP DETECT
Displays the status of high temperature detection of IGBT
HIGH VOLTAGE SUPPLY
Displays the high voltage supply status from VCM via EV system CAN
VOLTAGE (S1-S3)
(V) Displays the S1-S3 of resolver detected voltage
VOLTAGE (S2-S4)
(V) Displays the S2-S4 of resolver detected voltage
ERROR LEVEL 1
Displays the diagnosis flag of resolver IC
ERROR LEVEL 2
ERROR LEVEL 3
DIAGNOSIS SYSTEM (TRACTION MOTOR INVERTER)
TMS-23
< SYSTEM DESCRIPTION >
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DATA MONITOR
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applica-
bleto this vehicle, refer to CONSULT display items.
ERROR CODE 1
Displays the diagnosis results of resolver IC
ERROR CODE 2
RESOLVER VOLTAGE
(V) Displays the power supply voltage of resolver
5V POWER SUPPLY
(V) Displays the 5V control power supply voltage
3V POWER SUPPLY
(V) Displays the 3V control power supply voltage
Monitored item (Unit)
Remarks
Monitored item (Unit)
Remarks
MOTOR TEMPERATURE
(
°C or °F) Displays the temperature of traction motor
12V POWER VOLTAGE
(V) Displays 12V battery power voltage input to traction motor inverter
INV INPUT HIGH VOLTAGE
(V) Displays high voltage input to traction motor inverter
COMMAND TORQUE
(Nm) Displays the torque command value from VCM via EV system CAN
MOTOR SPEED
(rpm) Displays the traction motor speed
SEQUENCE MODE
Displays the sequence number in motor controller
OUTPUT LIMIT MOTOR TEMP
• Displays presence of output limit due to traction motor temperature increase
after last deletion of output limit history
• Values can be reset using “CLEAR OUTPUT LIMIT REASON” of work sup-
port
OUTPUT LIMIT INV TEMP
• Displays presence of output limit due to temperature increase inside traction
motor inverter after last deletion of output limit history
• Values can be reset using “CLEAR OUTPUT LIMIT REASON” of work sup-
port
CARRIER FREQUENCY
Displays the carrier frequency
HIGH VOLTAGE SUPPLY
Displays the high voltage supply status from VCM via EV system CAN
CHARGE RELAY READY REQ
Displays the state of charge judgment start request of high voltage circuit
SHIFT POSITION (VCM)
Displays the shift position from VCM via EV system CAN
TMS-24
< ECU DIAGNOSIS INFORMATION >
TRACTION MOTOR INVERTER
ECU DIAGNOSIS INFORMATION
TRACTION MOTOR INVERTER
Reference Value
INFOID:0000000010120912
CONSULT DATA MONITOR STANDARD VALUE
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
TERMINAL LAYOUT
PHYSICAL VALUES
CAUTION:
Monitor item
Condition
Value / Status (Approx.)
MOTOR TEMPERATURE
READY (stop the vehicle)
Almost same as coolant temperature af-
ter temperature saturation. [approxi-
mately within 10
°C (50°F) of coolant
temperature]
During driving
The value changes along with accelera-
tion/deceleration.
12V POWER VOLTAGE
Power switch ON
9 – 16 V
INV INPUT HIGH VOLTAGE
READY (stop the vehicle) and during driving
240 – 403 V
COMMAND TORQUE
During driving
The value changes along with accelera-
tion/deceleration.
MOTOR SPEED
READY (stop the vehicle)
0 rpm
During driving
The value changes along with accelera-
tion/deceleration.
SEQUENCE MODE
READY (stop the vehicle)
11
OUTPUT LIMIT MOTOR TEMP
When the vehicle has history of output limit
Yes
When output limit is reset
None
OUTPUT LIMIT INV TEMP
When the vehicle has history of output limit
Yes
When output limit is reset
None
CARRIER FREQUENCY
READY (stop the vehicle)
5k
HIGH VOLTAGE SUPPLY
READY (stop the vehicle)
SUPPLY
CHARGE RELAY READY REQ
READY (stop the vehicle)
ON
SHIFT POSITION (VCM)
READY (stop the vehicle)
P position
P
R position
R
N position
N
D position
D
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