Terminal number

Wire colour

Terminal name

Description

Signal

2

YEL

INJ4 (No. 4 INJECTOR)

Drives No. 4 injector

With ignition switch ON (II): battery voltage

At idle: duty controlled

3

BLU

INJ3 (No. 3 INJECTOR)

Drives No. 3 injector

4

RED

INJ2 (No. 2 INJECTOR)

Drives No. 2 injector

5

BRN

INJ1 (No. 1 INJECTOR)

Drives No. 1 injector

6

GRN

FANC (RADIATOR FAN CONTROL)

Drives radiator fan relay

With radiator fan running: about 0 V

With radiator fan stopped: battery voltage

7*2

RED/BLK

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

Drives A/T pressure control solenoid valve A

With the ignition switch ON (II): duty controlled

8

RED/WHT

ECT (ENGINE COOLANT TEMPERATURE (ECT) SENSOR)

Detects ECT sensor signal

With the ignition switch ON (II): about 0.1-4.8 V

(depending on engine coolant temperature)

9*1

BLU/BLK

VTPSW (VTEC OIL PRESSURE SWITCH)

Detects VTEC oil pressure switch signal

At idle: about 0 V

10

WHT/BLU

ALTL (ALTERNATOR L SIGNAL)

Detects alternator L signal

With ignition switch ON (II): about 0 V

With engine running: battery voltage

13

WHT/RED

ALTF (ALTERNATOR FR SIGNAL)

Detects alternator FR signal

With engine running: 0 V-5 V

(depending on electrical load)

14

BLU/RED

EGR (EXHAUST GAS RECIRCULATION (EGR) VALVE)

Drives EGR valve

With EGR operating: duty controlled

With EGR not operating: about 0 V

15*1

GRN/YEL

VTS (VTEC SOLENOID VALVE)

Drives VTEC solenoid valve

At idle: about 0 V

16*2

BLK/RED

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

Drives A/T pressure control solenoid valve B

With the ignition switch ON (II): duty controlled

17

RED/YEL

IAT (INTAKE AIR TEMPERATURE (IAT) SENSOR)

Detects IAT sensor signal

With ignition switch ON (II): about 0.1 V-4.8 V

(depending on intake air temperature)

21

YEL/BLU

PCS (EVAPORATIVE EMISSION (EVAP) CANISTER PURGE VALVE)

Drives EVAP canister purge valve

With engine running, engine coolant below 70°C (158°F): battery voltage

With engine running, engine coolant above 70°C (158°F): duty controlled