Nissan Altima HL32 Hybrid. Manual - part 678

P0AE6-225

HBC-461

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

JMCIA0124GB

HBC-462

< COMPONENT DIAGNOSIS >

P0AE6-225

DTC Logic

INFOID:0000000004212072

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:0000000004212073

1.

PRECONDITIONING

• Turn ignition switch OFF before inspecting the high-voltage system. Take safety precautions such as wear-

ing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the ser-

vice plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you

are working on the high-voltage system.

JMCIA0125GB

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0AE6

225

Hybrid battery precharge con-
tactor control circuit low

Open or short to GND in the 
SMRP circuit

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

converter)

• Hybrid vehicle control ECU
• Fuse
• Fusible link

P0AE6-225

HBC-463

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

• 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.

>> GO TO 2.

2.

CHECK DTC OUTPUT (HYBRID SYSTEM)

1. Turn ignition switch ON.

2. Check DTC.

3. Refer to “Proceed to” in the table below to perform each inspection.

NOTE:
•

 : DTCs that are output

• — : DTCs that are not output

A,B,C or D

A

>> GO TO 14.

B

>> GO TO 18.

C

>> GO TO 23.

D

>> GO TO 3.

3.

CHECK FRAME WIRE (AUXILIARY BATTERY POSITION TERMINAL AND AMD TERMINAL VOLTAGE)

1. Turn ignition switch OFF.

2. Measure the voltage according to the value(s) in the table below.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 31.

4.

CHECK FUSIBLE LINK AND FUSE

1. Check the fusible link (letter D), the fuse (No. 68) and the fusible link (letter G) that are installed at the high

voltage fuse and fusible link box, for improper installation and for open circuits.

Item to inspect

P0A08-264

P0A09-265

P0A09-591

P2519-766

P0AE6-225

Proceed to

Only AMD open circuit inspec-
tion

—

A

—

—

—

—

—

Only IGCT open circuit inspec-
tion

—

B

—

—

—

—

—

AMD and IGCT open circuit in-
spections

—

—

C

—

—

—

AMD and IGCT open circuit and 
SMRP system inspections

—

—

—

—

D

Auxiliary battery

Ground

Voltage

Harness connector

Terminal

—

Positive (+)

Ground

9 to 14V

Hybrid vehicle converter

(DC/DC converter) (A)

Ground

Voltage

Harness connector

Terminal

E312

25 (AMD)

Ground

9 to 14V

JMCIA0230ZZ

HBC-464

< COMPONENT DIAGNOSIS >

P0AE6-225

They are connected securely. There are no open circuits in the fusible links or fuse.

OK

>> GO TO 5.

NG

>> Replace fuse.

5.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 6.

NG

>> Connect securely.

6.

CHECK HYBRID VEHICLE CONVERTER (AMD TERMINAL CONNECTION CONDITION)

1. Check for DTCs and save freeze frame data.

2. Disconnect the negative terminal from the auxiliary battery.

3. Check for looseness of AMD terminals 1 and 2.

4. Make sure to disconnect the terminals 1 and 2 to check for arc

marks.

A, B or C

A

>> GO  TO  7.

B

>> Repair or replace malfunctioning parts, component and area.

C

>> Tighten to specified torque.

7.

CHECK TERMINAL VOLTAGE (AMD TERMINAL)

1. Turn ignition switch OFF.

Result 1:

AMD terminal 1: 8.0 N·m (82 kgf-cm, 71 in-lbf)
AMD terminal 2: 9.0 N·m (92 kgf-cm, 80 in-lbf)

Result 2:

There are no arc marks.

JMCIA0161GB

Result 1

Procedure

Procedure to

Result 1

Result 2

No looseness is 
present

No arc marks are 
present

Connect AMD terminals 1 and 2, connect the negative terminal to the auxiliary 
battery, and go to step 7.

A

No looseness is 
present

Arc marks are 
present

Repair or replace the appropriate part (nut, round terminal, hybrid vehicle 
converter (DC/DC converter), terminal block for AMD terminal 2). After repair 
or replacement, connect the negative terminal to the auxiliary battery.

B

Looseness is 
present

No arc marks are 
present

Connect AMD terminals 1 and 2, connect the negative terminal to the auxiliary 
battery.

C

Looseness is 
present

Arc marks are 
present

Repair or replace the appropriate part (nut, round terminal, hybrid vehicle 
converter (DC/DC converter), terminal block for AMD terminal 2). After repair 
or replacement, connect the negative terminal to the auxiliary battery.

B