18 Way Connector

ECU CONNECTORS AND FUNCTIONS

CAV CIRCUIT FUNCTION
51 YL/DB Injector 1 ground
52 YL/BK Injector 2 ground
53 LG/YL California only, EGR solenoid ground
54 WT Ignition coil power transistor
55 OPEN
56 WT/RD Control relay ground (50 rpm or above, ground Fuel Pump Control Relay Coil)
57 RD/DB Air Flow Sensor
58 DG/YL ISC motor control
59 DG/BK ISC motor control
60 DB/DG Injector 3 ground
61 LG/WT Injector 4 ground
62 BR/DB Purge Solenoid Control
63 DB/DG Control Relay control by ECU
64 LG/RD Check engine light ground (12 volts light OFF, 0 volts light ON)
65 DB A/C clutch relay ground
66 DB/LG Backup for Control Relay control by ECU (same as 63)
67 LG/RD ISC motor control
68 LG/DB SC motor control