Nissan Altima HL32 Hybrid. Manual - part 688

P2126-109, P2127-107, P2128-108, P2138-110, P2138-154

HBC-501

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 8.

6.

CHECK HYBRID VEHICLE CONTROL ECU

1. Turn ignition switch OFF.

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

below.

OK or NG

OK

>> Replace accelerator pedal position sensor. (See 

ACC-3, "Removal and Installation"

).

NG

>> GO TO 7.

7.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL

POSITION SENSOR)

1. Turn ignition switch OFF.

2. Disconnect the E66 hybrid vehicle control ECU connector.

3. Turn ignition switch ON.

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

NOTE:

Turn ignition switch ON with the accelerator pedal position sensor and hybrid vehicle control ECU connec-

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

5. Turn ignition switch OFF.

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

Accelerator pedal position sen-

sor (A)

Accelerator pedal position sen-

sor (A)

Resistance

Harness

connector

Terminal

Harness

connector

Terminal

E40

6 (VPA1)

E40

5 (GND1)

37 to 41 k

Ω

3 (VPA2)

2 (GND2)

JMCIA0237GB

Hybrid vehicle control ECU

Ground

Voltage

Harness

connector

Terminal

E66

147 (VPA)

Ground

Below 1V

130 (EP1)

146 (VPA2)

129 (EP2)

Hybrid vehicle control ECU

Accelerator pedal position sensor

Resistance

Harness connector

Terminal

Harness connector

Terminal

E66

147 (VPA)

E40

6 (VPA1)

Below 1

Ω

113 (VCP1)

4 (VC1)

130 (EP1)

5 (GND1)

146 (VPA2)

3 (VPA2)

112 (VCP2)

1 (VC2)

129 (EP2)

2 (GND2)

HBC-502

< COMPONENT DIAGNOSIS >

P2126-109, P2127-107, P2128-108, P2138-110, P2138-154

OK or NG

OK

>> Replace hybrid vehicle control ECU. (See 

HBC-644, "Removal and Installation"

)

NG

>> Repair or replace harness or connector.

8.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL

POSITION SENSOR)
1. Turn ignition switch OFF.

2. Disconnect connector E66 from the hybrid vehicle control ECU.

3. Turn ignition switch ON.

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

NOTE:

Turn ignition switch ON with the accelerator pedal position sensor and hybrid vehicle control ECU connec-

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

5. Turn ignition switch OFF.

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

Hybrid vehicle control ECU

Ground

Resistance

Harness connector

Terminal

E66

147 (VPA)

Ground

10 k

Ω or higher

113 (VCP1)

130 (EP1)

146 (VPA2)

112 (VCP2)

129 (EP2)

Accelerator pedal position sensor

Ground

Resistance

Harness connector

Terminal

E40

6 (VPA1)

Ground

10 k

Ω

4 (VC1)

5 (GND1)

3 (VPA2)

1 (VC2)

2 (GND2)

Hybrid vehicle control ECU

Ground

Voltage

Harness connector

Terminal

E66

147 (VPA)

Ground

Below 1V

130 (EP1)

146 (VPA2)

129 (EP2)

Hybrid vehicle control ECU

Accelerator pedal position sensor

Resistance

Harness connector

Terminal

Harness connector

Terminal

E66

113 (VCP1)

E40

4 (VC1)

Below 1

Ω

130 (EP1)

5 (GND1)

112 (VCP2)

1 (VC2)

129 (EP2)

2 (GND2)

P2126-109, P2127-107, P2128-108, P2138-110, P2138-154

HBC-503

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

OK or NG

OK

>> Replace hybrid vehicle control ECU. (See 

HBC-644, "Removal and Installation"

)

NG

>> Repair or replace harness or connector.

Hybrid vehicle control ECU

Ground

Resistance

Harness connector

Terminal

E66

113 (VCP1)

Ground

10 k

Ω or higher

130 (EP1)

112 (VCP2)

129 (EP2)

Accelerator pedal position sensor

Ground

Resistance

Harness connector

Terminal

E40

4 (VC1)

Ground

10 k

Ω

5 (GND1)

1 (VC2)

2 (GND2)

HBC-504

< COMPONENT DIAGNOSIS >

P2511-149

P2511-149

Description

INFOID:0000000004212106

The hybrid vehicle control ECU monitors the power resource VB voltage to detect an instantaneous interrup-

tion.

DTC Logic

INFOID:0000000004212107

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000004212108

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 BATTERY TERMINAL

Check the connection of the auxiliary battery terminal.

OK or NG

OK

>> GO TO 3.

NG

>> Connect securely.

3.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 4.

NG

>> Connect securely.

4.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - IGCT RELAY)

1. Remove the IGCT relay from the high voltage fuse and fusible link box.

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

OK or NG

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P2511

149

ECM/PCM power relay sense 
circuit intermittent

When the ignition switch ON 
(READY), the hybrid vehicle con-
trol ECU is reset.

• Wire harness or connector
• Hybrid vehicle control ECU

Result:

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

Hybrid vehicle control ECU

High voltage fuse and fusible link 

box

Resistance

Harness

connector

Terminal

Harness

connector

Terminal

E66

174 (VB)

V-1

5 (IGCT relay)

Below 1 

Ω

168 (VB2)