Honda Accord Electrical Troubleshooting Manual - part 145

 

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Honda Accord Electrical Troubleshooting Manual - part 145

 

 

205-4



Engine/Powertrain Control Module Terminal Arrangement (L4)

wire side of female terminals

8

18

25

17

24

6

16

23

15

5

14

4

13

22

3

12

21

11

7

2

10

20

9

19

1

ECM/PCM Inputs and Outputs at Connector B (25P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

1

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

YEL/BLK

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

IGP1 (POWER SOURCE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Power source for the PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V

ÁÁÁÁ

ÁÁÁÁ

2

ÁÁÁÁ

ÁÁÁÁ

BLK

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

PG1 (POWER GROUND)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Ground for the ECM/PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

Less than 1.0 V at all times

ÁÁÁÁ

ÁÁÁÁ

3

ÁÁÁÁ

ÁÁÁÁ

RED

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

INJ2 (No. 2 INJECTOR)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Drives No. 2 injector.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage

ÁÁÁÁ

ÁÁÁÁ

4

ÁÁÁÁ

ÁÁÁÁ

BLU

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

INJ3 (No. 3 INJECTOR)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Drives No. 3 injector.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

With engine running: duty controlled

ÁÁÁÁ

ÁÁÁÁ

5

ÁÁÁÁ

ÁÁÁÁ

YEL

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

INJ4 (No. 4 INJECTOR)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Drives No. 4 injector.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

7

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

PNK

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

E-EGR

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Drives EGR valve.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With EGR operation during driving with fully
warmed up engine: duty controlled
With EGR not operating: 0 V

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

8*

2

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

WHT

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

LSA – (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE A–SIDE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

A/T clutch pressure control
solenoid valve A power supply
negative electrode.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): duty controlled

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

9

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

YEL/BLK

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

IGP2 (POWER SOURCE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Power source for the PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V

ÁÁÁÁ

ÁÁÁÁ

10

ÁÁÁÁ

ÁÁÁÁ

BLK

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

PG2 (POWER GROUND)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Ground for the ECM/PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

Less than 1.0 V at all times

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

11

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

BRN

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

INJ1 (No.1 INJECTOR)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Drives No. 1 injector.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage
With engine running: duty controlled

ÁÁÁÁ

ÁÁÁÁ

12*

4

ÁÁÁÁ

ÁÁÁÁ

GRN/YEL

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

VTS
(VTEC SOLENOID VALVE)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Drives VTEC solenoid valve.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

With engine at low rpm: 0 V
With engine at high rpm: battery voltage

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

13

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

YEL/GRN

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

ICM (IGNITION CONTROL
MODULE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Sends ignition pulse.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage
With engine running: pulses

ÁÁÁÁ

ÁÁÁÁ

14*

2

ÁÁÁÁ

ÁÁÁÁ

BLU/BLK

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

OP2SW (2ND OIL PRESSURE
SWITCH)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Detects 2nd oil pressure switch.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): about 5 V

*1: M/T
*2: A/T
*3: F23A4 engine
*4: F23A1, F23A4 engine

Circuit Index

Circuit Index

Menu

Menu

s

t

s

t

205-5



Engine/Powertrain Control Module Terminal Arrangement (L4)

wire side of female terminals

8

18

25

17

24

6

16

23

15

5

14

4

13

22

3

12

21

11

7

2

10

20

9

19

1

ECM/PCM Inputs and Outputs at Connector B (25P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

16*

3

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

GRN/RED

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

PO2SHTCR
(AIR FUEL RATIO SENSOR
HEATER CONTROL RELAY)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Drives air fuel ratio sensor
heater relay.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): 0 V

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

17*

2

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

RED

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

LSA + (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE A + SIDE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

A/T clutch pressure control
solenoid valve A power supply
positive electrode.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): duty controlled

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

18*

2

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

GRN

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

LSB – (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE B – SIDE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

A/T clutch pressure control
solenoid valve B power supply
negative electrode.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): duty controlled

ÁÁÁÁ

Á

ÁÁ

Á

Á

ÁÁ

Á

ÁÁÁÁ

19*

3

ÁÁÁÁ

Á

ÁÁ

Á

Á

ÁÁ

Á

ÁÁÁÁ

BLK/WHT

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

PO2SHTC
(AIR FUEL RATIO SENSOR
HEATER CONTROL)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Drives air fuel ratio sensor heater.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): battery voltage
With fully warmed up engine running: 0 V

ÁÁÁÁ

ÁÁÁÁ

20

ÁÁÁÁ

ÁÁÁÁ

BRN/BLK

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

LG1 (LOGIC GROUND)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Ground for the ECM/PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

Less than 1.0 V at all times

ÁÁÁÁ

Á

ÁÁ

Á

Á

ÁÁ

Á

ÁÁÁÁ

21

ÁÁÁÁ

Á

ÁÁ

Á

Á

ÁÁ

Á

ÁÁÁÁ

WHT/YEL

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

VBU (VOLTAGE BACK UP)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Power source for the ECM/PCM
control circuit.
Power source for the DTC
memory.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

Battery voltage at all times

ÁÁÁÁ

ÁÁÁÁ

22

ÁÁÁÁ

ÁÁÁÁ

BRN/BLK

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

LG2 (LOGIC GROUND)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Ground for the ECM/PCM
control circuit.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

Less than 1.0 V at all times

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

23

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

BLK/BLU

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

IACV
(IDLE AIR CONTROL VALVE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

Drives IAC valve.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With engine running: duty controlled

ÁÁÁÁ

ÁÁÁÁ

24*

2

ÁÁÁÁ

ÁÁÁÁ

BLU/WHT

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

OP3SW (3RD OIL PRESSURE
SWITCH)

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Detects 3rd oil pressure switch.

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): about 5 V

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

25*

2

ÁÁÁÁ

Á

ÁÁ

Á

ÁÁÁÁ

ORN

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

LSB + (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE B + SIDE)

ÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁ

A/T clutch pressure control
solenoid valve B power supply
positive electrode.

ÁÁÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁ

Á

ÁÁÁÁÁÁÁÁÁÁÁÁ

With ignition switch ON (II): duty controlled

*1: M/T
*2: A/T
*3: F23A4 engine
*4: F23A1, F23A4 engine

Circuit Index

Circuit Index

Menu

Menu

s

t

s

t

205-6



Powertrain Control Module Terminal Arrangement (V6)

wire side of female terminals

8

18

25

17

24

6

16

23

15

5

14

4

13

22

3

12

21

11

7

2

10

20

9

19

1

PCM Inputs and Outputs at Connector B (25P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

1

YEL/BLK

IGP1 (POWER SOURCE)

Power source for the PCM
circuit.

With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V

2

BLK

PG1 (POWER GROUND)

Ground for the PCM circuit.

Less than 1.0 V at all times

3

BLK/RED

INJ5 (No. 5 INJECTOR)

Drives No. 5 injector.

With engine running: pulses

4

YEL

INJ4 (No. 4 INJECTOR)

Drives No. 4 injector.

5

RED

INJ2 (No. 2 INJECTOR)

Drives No. 2 injector.

6

WHT/BLU

INJ6 (No. 6 INJECTOR)

Drives No. 6 injector.

7

PNK

E-EGR

Drives EGR valve.

With EGR operating: duty controlled
With EGR not operating: about 0 V

8

WHT

LSA – (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE A – SIDE)

A/T clutch pressure control
solenoid valve A power supply
negative terminal.

With ignition switch ON (II): pulses

9

YEL/BLK

IGP2 (POWER SOURCE)

Power source for the PCM circuit.

With ignition switch ON (II): battery voltage
With ignition switch OFF: 0 V

10

BLK

PG2 (POWER GROUND)

Ground for the PCM circuit.

Less than 1.0 V at all times

11

BRN

INJ1 (No. 1 INJECTOR)

Drives No. 1 injector.

With engine running: pulses

12

GRN/YEL

VTS
(VTEC SOLENOID VALVE)

Drives VTEC solenoid valve.

With engine at low rpm: 0 V
With engine at high rpm: battery voltage

13*

1

YEL/GRN

ICM (IGNITION CONTROL
MODULE)

Sends ignition pulse.

With ignition switch ON (II): battery voltage
With engine running: about 10 V
(depending on engine speed)

*1: ’98-99 models
*2: ’00 model
*3: ’01-’02 models

Circuit Index

Circuit Index

Menu

Menu

s

t

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205-7



Powertrain Control Module Terminal Arrangement (V6)

wire side of female terminals

8

18

25

17

24

6

16

23

15

5

14

4

13

22

3

12

21

11

7

2

10

20

9

19

1

PCM Inputs and Outputs at Connector B (25P)

NOTE: Standard battery voltage is 12 V.

Terminal

number

Wire color

Terminal name

Description

Signal

14*

1

BLU/BLK

OP2SW (2ND OIL
PRESSURE SWITCH)

Detects 2nd oil pressure switch.

With ignition switch ON (II): battery voltage

14*

2, *3

BLU/WHT

ATPNP (TRANSMISSION
RANGE SWITCH)

Detects transmission range
switch signal.

In Park or Neutral: 0 V
In any other position: battery voltage

15

BLU

INJ3 (No. 3 INJECTOR)

Drives No. 3 injector.

With engine running: pulses

17

RED

LSA + (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE A + SIDE)

A/T clutch pressure control
solenoid valve A power supply
positive terminal.

With ignition switch ON (II): pulses

18

GRN

LSB – (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE B – SIDE)

A/T clutch pressure control
solenoid valve B power supply
negative terminal.

With ignition switch ON (II): pulses

20

BRN/BLK

LG1 (LOGIC GROUND)

Ground for the PCM circuit.

Less than 1.0 V at all times

21

WHT/YEL

VBU (VOLTAGE BACK UP)

Power source for the PCM circuit.
Power source for the DTC
memory.

Battery voltage at all times

22

BLK

*1

BRN/BLK

*2

LG2 (LOGIC GROUND)

Ground for the PCM circuit.

Less than 1.0 V at all times

23

BLK/BLU

IACV (IDLE AIR CONTROL
VALVE)

Drives IAC valve.

With engine running: pulses

24

BLU/WHT

OP3SW (3RD OIL
PRESSURE SWITCH)

Detects 3rd oil pressure switch.

With ignition switch ON (II): battery voltage

25

ORN

LSB + (A/T CLUTCH
PRESSURE CONTROL
SOLENOID VALVE B + SIDE)

A/T clutch pressure control
solenoid valve B power supply
positive terminal.

With ignition switch ON (II): pulses

*1: ’98-99 models
*2: ’00 model
*3: ’01-’02 models

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