Nissan Altima HL32 Hybrid. Manual - part 706

U0110-159, U0110-160, U0110-656, U0110-657

HBC-573

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U0110-159, U0110-160, U0110-656, U0110-657

Description

INFOID:0000000004212172

The inverter converts high-voltage direct current from the HV battery and alternating current for MG2 and

MG1. The inverter contains a three-phase bridge circuit, which consists of six power transistors each for MG2

and MG1, that converts direct current to three-phase alternating current. The MG ECU controls the actuation

of the power transistors. The inverter transmits information that is necessary for effecting control, such as the

amperage and voltage, to the MG ECU.

The MG ECU uses a voltage sensor, which is built into the inverter, to detect boosted high voltage to allow

control of the voltage boost.

The inverter voltage sensor outputs voltage that varies between 0 and 5 V in accordance with the changes in

the high voltage. The higher the high voltage, the higher the output voltage, and the lower the high voltage, the

lower the output voltage.

HBC-574

< COMPONENT DIAGNOSIS >

U0110-159, U0110-160, U0110-656, U0110-657

The MG ECU monitors the inverter voltage and detects malfunctions.

DTC Logic

INFOID:0000000004212173

DTC DETECTION LOGIC

The inverter with converter assembly (MG ECU) controls MG2 based on commands from the hybrid vehicle

control ECU via serial communication.

The inverter with converter assembly (MG ECU) monitors communication data and detects malfunctions.

JMCIA0099GB

U0110-159, U0110-160, U0110-656, U0110-657

HBC-575

< COMPONENT DIAGNOSIS >

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DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC confirmation procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to 

HBC-575, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004212174

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.

• If any of U0110-159, 160, 656 or 657 are detected, clearing DTCs using the CONSULT-III will cause DTC

P0A1B-788 (power source IC reset) to be output. Proceed to troubleshooting without considering this code.

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

converter assembly.

>> GO TO 2.

2.

CLEAR DTC (HYBRID SYSTEM)

1. Turn ignition switch ON.

2. Read and record the DTCs and freeze frame data.

3. Clear the DTCs.

>> GO TO 3.

3.

RECONFIRM DTC OUTPUT (HYBRID SYSTEM)

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

U0110

159

Lost communication with driver 
motor control module

Error in reception from the invert-
er with converter assembly (MG 
ECU) via serial communication 
(out of communication standard)

• Wire harness or connector
• Inverter with converter assembly 

(MG ECU)

• Hybrid vehicle control ECU

160

Error in signal transmission to 
the inverter with converter as-
sembly (MG ECU) via serial 
communication (no transmission, 
out of communication standard)

• Wire harness or connector
• Inverter with converter assembly 

(MG ECU)

• Hybrid vehicle control ECU

656

Error in reception from the invert-
er with converter assembly (MG 
ECU) via serial communication 
(out of communication standard)

• Wire harness or connector
• Inverter with converter assembly 

(MG ECU)

• Hybrid vehicle control ECU

657

Error in reception from the invert-
er with converter assembly (MG 
ECU) via serial communication 
(no reception)

• Wire harness or connector
• Inverter with converter assembly 

(MG ECU)

• Hybrid vehicle control ECU

HBC-576

< COMPONENT DIAGNOSIS >

U0110-159, U0110-160, U0110-656, U0110-657

1. Turn ignition switch ON.

2. Check DTC.
DTC U0110-159, 160, 656 or 657 is output

YES

>> GO TO 4.

NO

>> Check for intermittent incident. (See 

GI-42, "Intermittent Incident"

)

4.

CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CON-

NECTOR)
See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 5.

NG

>> Connect securely.

5.

CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY POWER SOURCE

CIRCUIT)

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.

2. Disconnect the E69 inverter with converter assembly connector.

3. Turn ignition switch ON.

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

5. Turn ignition switch ON.

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

NOTE:

Turn ignition switch ON with the low voltage connector of the inverter with converter assembly discon-

nected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace power source circuit.

6.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 7.

NG

>> Connect securely.

7.

CHECK HARNESS AND CONNECTOR (HV CONTROL ECU - INVERTER WITH CONVERTER ASSEM-

BLY)
1. Turn ignition switch OFF.

2. Disconnect the E66 hybrid vehicle control ECU connector.

3. Turn ignition switch ON.

Inverter with converter assembly

Ground

Resistance

Harness connector

Terminal

E69

3 (GND1)

Ground

Below 1

Ω

4 (GND2)

Inverter with converter assembly

Ground

Voltage

Harness connector

Terminal

E69

1 (+B)

Ground

10 to 14V

2 (+B2)