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