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
s
s
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
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
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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