Nissan Altima HL32 Hybrid. Manual - part 681

P0AE6-225

HBC-473

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

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

OK or NG

OK

>> Replace hybrid vehicle converter (See 

HBB-103, "Removal and Installation"

).

NG

>> Repair or replace harness or connector.

31.

CHECK AUXILIARY BATTERY

1. Check the connection of the auxiliary battery negative terminal.

2. Check for arc marks on the auxiliary battery negative terminal.

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

OK or NG

OK

>> Repair or replace frame wire.

NG

>> Repair or replace harness or connector.

Battery pack wire

Hybrid vehicle converter

(DC/DC converter)

Resistance

Harness connector

Terminal

Harness connector

Terminal

B130

1 (IGCT)

n4

1 (IGCT)

Below 1

Ω

Battery pack wire

Ground

Resistance

Harness connector

Terminal

B130

1 (IGCT)

Ground

10 k

Ω or higher

Hybrid vehicle converter

(DC/DC converter)

Ground

Resistance

Harness connector

Terminal

n4

1 (IGCT)

Ground

10k

Ω or higher

JMCIA0163GB

The terminal is connected securely and there is no contact problem.

There are no arc marks.

Auxiliary battery

Ground

Resistance

Harness connector

Terminal

–

negative

Ground

Below 1

Ω

HBC-474

< COMPONENT DIAGNOSIS >

P0AE7-224

P0AE7-224

Description

INFOID:0000000004212074

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

P0AE7-224

HBC-475

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

JMCIA0124GB

HBC-476

< COMPONENT DIAGNOSIS >

P0AE7-224

DTC Logic

INFOID:0000000004212075

DTC DETECTION LOGIC

The hybrid vehicle control ECU monitors the proper operation of the SMRP. If the hybrid vehicle control ECU

detects an open or short in the SMRP circuit, the hybrid vehicle control ECU will illuminate the MIL and set a

DTC.

Diagnosis Procedure

INFOID:0000000004212076

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

P0AE7

224

Hybrid battery precharge con-
tactor control circuit high

Short to +B in the SMRP circuit

• Wire harness or connector
• Hybrid vehicle converter (DC/DC 

converter)

• Hybrid vehicle control ECU