## Fuel and Emissions Systems

#### System Descriptions (cont'd)

11-13

ECM Inputs and Outputs at Connector B (24P)

Wire side of female terminals

NOTE: Standard battery voltage is 12 V.

Terminal number | Wire colour | Terminal name | Description | Signal
1 | BLU/WHT | VTC+ (VTC OIL CONTROL SOLENOID VALVE +SIDE) | Drives VTC oil control solenoid valve | With ignition switch ON (II): 0 V
2 | YEL | INJ4 (No. 4 INJECTOR) | Drives No. 4 injector | 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 | GRN/WHT | RVSLCK (REVERSE LOCKOUT SOLENOID VALVE) | Drives reverse lockout solenoid valve. | With vehicle speed above 20 km/h (12.5 mph): about 0 V With vehicle speed below 15 km/h (9.4 mph): battery voltage
8 | RED/WHT | ECT (ENGINE COOLANT TEMPERATURE SENSOR) | Detects ECT sensor signal | With the ignition switch ON (II): about 0.1 - 4.8 V (depending on engine coolant temperature)
9 | BLU/BLK | VTPSW (VTEC OIL PRESSURE SWITCH) | Detects VTEC oil pressure switch signal | With engine at low engine speed: about 0 V With engine at high engine speed: battery voltage
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: about 0 V - 5 V (depending on electrical load)
15 | GRN/YEL | VTS (VTEC SOLENOID VALVE) | Drives VTEC solenoid valve | At idle: about 0 V
17 | RED/YEL | IAT (INTAKE AIR TEMPERATURE SENSOR) | Detects IAT sensor signal | With ignition switch ON (II): about 0.1 V - 4.8 V (depending on intake air temperature)
18 | WHT/GRN | ALTC (ALTERNATOR CONTROL) | Sends alternator control signal | With engine running: about 0 V - 5 V (depending on electrical load)
21 | YEL/BLU | PCS (EVAPORATIVE EMISSION CANISTER PURGE VALVE) | Drives EVAP canister purge valve | With engine running, engine coolant below 75°C (167°F): battery voltage With engine running, engine coolant above 75°C (167°F): duty controlled
23 | BLK/WHT | VTC- (VTC OIL CONTROL SOLENOID VALVE -SIDE) | Drives VTC oil control solenoid valve | With the ignition switch ON (II): 0 V

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