Nissan Altima HL32 Hybrid. Manual - part 601

 

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Nissan Altima HL32 Hybrid. Manual - part 601

 

 

P0A0F-238

HBC-153

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

• If the READY light does not come on and the reading on the CONSULT-III shows DTC P0A90-239

(hybrid transaxle input malfunction [shaft damaged]), or the READY light comes on and MG1 turns but

the engine does not crank, replace the hybrid transaxle.

• If this DTC (P0A0F-238) is output, the HV battery may be dead and DTC P3000-388 or P3000-389 may

be output.

4. Refer to the graph for data list confirmation of “MG1 REVOLUTION” and “ENGINE SPEED”.

OK or NG

OK

>> GO TO 9.

NG

>> Replace hybrid transaxle (See 

TM-36, "Removal and Installation"

).

9.

CHECK ENGINE RACING

1. Turn ignition switch to READY position.

2. While the READY light is on, depress the accelerator pedal for 10 seconds with the shift lever in the P

position.

NOTE:

If the engine does not rev up and the reading on the CONSULT-III shows DTC P3147-239 (hybrid tran-

saxle input malfunction [shaft damaged]), or the Generator turns but the engine does not crank, replace

the hybrid transaxle.

OK or NG

OK

>> GO TO 10.

NG

>> Replace hybrid transaxle (See 

TM-36, "Removal and Installation"

).

10.

CHECK CREEP MOVEMENT

1. Depress the brake pedal, move the shift lever to the D position, and release the brake pedal.

NOTE:

If the wheels do not turn and the reading on the CONSULT-III shows DTC P3147 (hybrid transaxle mal-

function), replace the hybrid transaxle.

OK or NG

OK

>> GO TO 11.

NG

>> Replace hybrid transaxle (See 

TM-36, "Removal and Installation"

).

11.

CHECK ENGINE SPEED

1. While driving at the vehicle speed of more than 6 mph (10 km/h), fully depress the accelerator pedal to

raise the engine speed.

NOTE:

Engine speed

Generator speed

Approx. 900 rpm

Approx. 3,200 rpm

Approx. 1,500 rpm

Approx. 5,400 rpm

JMCIA0095GB

The engine revs up.

The wheels turn (creeping along).

Engine speed increases smoothly.

HBC-154

< COMPONENT DIAGNOSIS >

P0A0F-238

If the engine over-revs or the reading on the CONSULT-III shows DTC P3147-241 (hybrid transaxle input

malfunction [torque limiter slipping]), replace the transmission input damper.

OK or NG

OK

>> Replace hybrid vehicle control ECU (See 

HBC-644, "Removal and Installation"

).

NG

>> Replace transmission input damper assembly.

12.

CHECK FRONT TIRE REVOLUTION

1. Stop vehicle and turn ignition switch OFF.

2. Lift up the vehicle.

3. Move the shift lever to the N position.

CAUTION:

Do not turn ignition switch to READY position while performing this inspection. Be sure to turn

ignition switch OFF before performing this inspection, to prevent the engine from starting.

4. Turn the crank pulley by hand to check if the front tires rotate.

OK or NG

OK

>> Replace hybrid transaxle (See 

TM-36, "Removal and Installation"

).

NG

>> Check and repair engine.

The front tires do not rotate.

P0A10-263

HBC-155

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

P0A10-263

Description

INFOID:0000000004211804

The hybrid vehicle converter (DC/DC converter) converts the DC 244.8 V of the HV battery into DC 12 V in

order to supply power to areas such as the vehicle's lighting, audio, and ECU systems. In addition, it charges

the auxiliary battery.

A transistor bridge circuit initially converts DC 244.8 V into alternating current, and a transformer lowers its

voltage. Then, it is rectified and smoothed (into DC) and converted into DC 12 V.

The hybrid vehicle converter (DC/DC converter) controls the output voltage in order to keep a constant voltage

at the terminals of the auxiliary battery.

The hybrid vehicle control ECU uses the NODD signal line to transmit a stop command to the hybrid vehicle

converter (DC/DC converter) and receive signals indicating the normal or abnormal condition of the 12 V

charging system.

If the vehicle is being driven with an inoperative hybrid vehicle converter (DC/DC converter), the voltage of the

auxiliary battery will drop, which will prevent the continued operation of the vehicle. Therefore, the hybrid vehi-

cle control ECU monitors the operation of the hybrid vehicle converter (DC/DC converter) and alerts the driver

if it detects a malfunction.

JMCIA0093GB

HBC-156

< COMPONENT DIAGNOSIS >

P0A10-263

DTC Logic

INFOID:0000000004211805

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000004211806

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.

>> GO TO 2.

2.

CHECK DTC OUTPUT (HYBRID SYSTEM)

1. Turn ignition switch ON.

2. Check DTC.
Are DTC P0A10-263 and other DTCs detected?

YES

>> Go to Diagnosis Procedure relevant to output DTC.

NO

>> GO TO 3.

3.

CHECK HARNESS AND CONNECTOR

1. Turn ignition switch OFF.

JMCIA0139GB

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0A10

263

DC/DC Converter Status 
Circuit High Input

+B short in hybrid vehicle 
converter (DC/DC converter) 
NODD signal line

• Wire harness or connector
• Hybrid vehicle converter (DC/DC converter)
• Hybrid vehicle control ECU

 

 

 

 

 

 

 

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