Nissan Altima HL32 Hybrid. Manual - part 677

P0AE2-773

HBC-457

< COMPONENT DIAGNOSIS >

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HBC

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JMCIA0124GB

HBC-458

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P0AE2-773

DTC Logic

INFOID:0000000004212069

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000004212070

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.

• Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with

converter assembly.

• If P0AE2-773 is output, the vehicle is prevented from starting.

JMCIA0125GB

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0AE2

773

Hybrid Battery Precharge Con-
tactor Circuit Stuck Closed

When only SMRB is ON, current 
is applied to SMRP (SMRP is 
stuck closed).

• Connector connection
• Hybrid vehicle converter (DC/DC 

converter)

P0AE2-773

HBC-459

< COMPONENT DIAGNOSIS >

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>> GO TO 2.

2.

CHECK HYBRID VEHICLE CONVERTER

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF and remove the service plug grip (See page 

HBC-632, "Precautions for Inspect-

ing the Hybrid Control System"

).

NOTICE:

After removing the service plug grip, do not turn ignition switch ON (READY), unless instructed by the ser-

vice manual because this may cause a malfunction.

2. Disconnect the w1, v1 and v3 hybrid vehicle converter (DC/DC

converter) connectors from the HV relay assembly.

3. Measure the resistance according to the value(s) in the table

below.

NOTE:

If the resistance is between 28.5 and 31.5

Ω, it can be deter-

mined that the SMRP is stuck closed.

OK or NG

OK

>> GO TO 3.

NG

>> Replace hybrid vehicle converter (See 

HBB-103, "Removal and Installation"

).

3.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) 

See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 4.

NG

>> Connect securely.

4.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONVERTER CONNECTOR) 

See 

HBC-140, "Diagnosis Procedure"

.

OK or NG

OK

>> Replace hybrid vehicle converter (See page 

HBB-103, "Removal and Installation"

).

NG

>> Connect securely.

Frame Wire

Frame Wire

Resistance

Harness

connector

Terminal

Harness

connector

Terminal

w1

1 (Pre-

charge+)

v1

1 (High volt-

age –)

10 k

Ω or higher

JMCIA0156GB

HBC-460

< COMPONENT DIAGNOSIS >

P0AE6-225

P0AE6-225

Description

INFOID:0000000004212071

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