Nissan Altima HL32 Hybrid. Manual — part 673
P0ADB-227, P0ADC-226
HBC-441
< COMPONENT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
HBC
N
O
P
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace harness or connector.
7.
CHECK HARNESS AND CONNECTOR
CAUTION:
Be sure to wear insulated gloves.
1. Connect the battery pack wire connector.
2. Measure the resistance according to the value(s) in the table
below.
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace harness or connector.
8.
INSPECT HV RELAY ASSEMBLY (SMRB)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
1. Check that the service plug grip is not installed.
2. Remove the HV relay assembly from the vehicle (See
HBB-105, "Removal and Installation"
).
3. Measure the resistance according to the value(s) in the table
below.
4. Measure the resistance according to the value(s) in the table
below.
OK or NG
OK
>> Replace hybrid vehicle control ECU (See
HBC-644, "Removal and Installation"
).
NG
>> Replace HV relay assembly (See
HBB-105, "Removal and Installation"
).
HV Relay Assembly
Ground
Resistance
Harness connector
Terminal
n3
3 (CON2)
Ground
10 k
Ω or higher
HV Relay Assembly
Ground
Resistance
Harness connector
Terminal
n3
2 (GND)
Ground
Below 1
Ω
JMCIA0159GB
HV Relay Assembly
HV Relay Assembly
Resistance
Component
connector
Terminal
Component
connector
Terminal
h4
1
s1
1
Below 1
Ω
[When battery voltage (12 V) ap-
plied to terminals n3-2 and n3-3]
10 k
Ω or higher
HV Relay Assembly
HV Relay Assembly
Resistance
Component
connector
Terminal
Component
connector
Terminal
n3
3 (CON2)
n3
2 (GND)
18.8 to 32.1
Ω at -35 to 80°C (-31 to 176° F)
JMCIA0147GB
HBC-442
< COMPONENT DIAGNOSIS >
P0ADF-229, P0AE0-228
P0ADF-229, P0AE0-228
Description
INFOID:0000000004212062
The SMRs (System Main Relay) are the relays that connect or disconnect the high voltage power system in
accordance with commands from the hybrid vehicle control ECU.
The SMR system is composed of three SMRs and one system main resistor. SMRB and SMRG are located on
the HV relay assembly in the battery carrier under the HV battery. SMRP and the system main resistor are
located in the hybrid vehicle converter (DC/DC converter) assembly in the battery carrier.
To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehi-
cle through the system main resistor. Then, SMRP will be turned off after the SMRG is turned on. To shut off
the high voltage power system, SMRB and SMRG are turned off.
When there is an open in the AMD line or IGCT line, the following DTCs are output:
P0AE6-225 is output first because the time required for diagnosis is the shortest.
Trouble area
Malfunction
DTC
Occurrence condition
Open in AMD line
DC/DC converter malfunction
P0A08-264
May not occur
Open in VLO, short to GND
P0A09-591
May not occur
IDH frequency error
P2519-766
Occurs
Open in SMRP, short to GND
P0AE6-225
Occurs
Open in IGCT line
Open in NODD, short to GND
P0A09-265
Occurs
Open in VLO, short to GND
P0A09-591
Occurs
IDH frequency error
P2519-766
Occurs
Open in SMRP, short to GND
P0AE6-225
Occurs
P0ADF-229, P0AE0-228
HBC-443
< COMPONENT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
HBC
N
O
P
JMCIA0124GB
HBC-444
< COMPONENT DIAGNOSIS >
P0ADF-229, P0AE0-228
DTC Logic
INFOID:0000000004212063
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000004212064
1.
PRECONDITIONING
• Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with
converter assembly, take safety precautions such as wearing insulated gloves and removing the service
plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent
other technicians from accidentally reconnecting it while you are working on the high-voltage system.
• After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage
connectors or terminals.
JMCIA0125GB
DTC No.
INF code
Trouble diagnosis name
DTC detecting condition
Possible cause
P0ADF
229
Hybrid Battery Negative Con-
tactor Control Circuit Low
Short to GND in the SMRG circuit
• Wire harness or connector
• HV relay assembly
• Hybrid vehicle control ECU
P0AE0
228
Hybrid Battery Negative Con-
tactor Control Circuit High
Open or short to +B in the SMRG
circuit
• Wire harness or connector
• HV relay assembly
• Hybrid vehicle control ECU
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