Nissan Altima HL32 Hybrid. Manual - part 694

P3004-132

HBC-525

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P3004-132

Description

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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

HBC-526

< COMPONENT DIAGNOSIS >

P3004-132

JMCIA0198GB

P3004-132

HBC-527

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DTC Logic

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DTC DETECTION LOGIC

Diagnosis Procedure

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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.

JMCIA0125GB

DTC No.

INF Code

Trouble diagnosis name

DTC detecting condition

Possible cause

P3004

132

Power cable malfunction

The inverter is not precharged

• HV relay assembly
• Frame wire
• Inverter with converter assembly
• HV battery
• Wire harness or connector

HBC-528

< COMPONENT DIAGNOSIS >

P3004-132

>> GO TO 2.

2.

CHECK DTC OUTPUT

1. Turn ignition switch ON.

2. Check DTC.

Is DTC detected?

YES

>> Go to Diagnosis Procedure relevant to output DTC.

NO

>> GO TO 3.

3.

CHECK FREEZE FRAME DATA

1. Turn ignition switch ON.

2. Check DTC.

3. Read the freeze frame data for DTC P3004-132.

A, B or C

A

>> Replace inverter with converter assembly. (See 

HBC-638, "Removal and Installation"

).

B

>> Go to Diagnosis Procedure relevant to output DTC. (P3004-800)

C

>> GO  TO  4.

4.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 5.

NG

>> Connect securely.

5.

CHECK CONDITION OF FRAME WIRE CONNECTION(S) (INVERTER WITH CONVERTER ASSEMBLY

SIDE)

CAUTION:

Be sure to wear insulated gloves.

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

HBC-632, "Precautions for Inspecting the

Hybrid Control System"

).

NOTE:

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.

DTC No.

Related Part

P0A95

Electric vehicle fuse circuit

P0AE7-224, P0AE6-225

SMRP control line circuit

P0ADC-226, P0ADB-227

SMRB control line circuit

P0A1F, P3105, P0AFA

Battery smart unit circuit, VB sensor circuit

P0ABF, P0AC0, P0AC1, P0AC2

IB sensor circuit

P3004-131, 800, 801

High-voltage power source line circuit

P0A1A-156, 658, 151, 155, 659, P0A1B-511, 164, 163, 512, 193, 786, 788, 661
P0A78-266, 267, 523, 586, P0A94-442

VH sensor circuit

Result

Proceed to

Difference between HV battery voltage (PWR RESOURCE VB) and boost converter voltage (VL) is 50V 
or less, difference between HV battery voltage (PWR RESOURCE VB) and inverter voltage (VH) is 
more than 70V, and difference between boost converter voltage (VL) and inverter voltage (VH) is more 
than 90V.

A

HV battery current (IB) is 3 A or more.

B

Other than above

C