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Computer Pinout Chart
84 Turbo computer pin out
84 ECCS Connector
| Pin | Wire color | Destination |
| 1 | N/A | Blank |
| 2 | L | AAC |
| 3 | L | Ignition Coil, Power Transistor |
| 4 | L/W | EGR Control Solenoid |
| 5 | G/B | Power Transistor |
| 6 | R | EFI Relay |
| 7 | N/A | Blank |
| 8 | G/Y | Crank Angle Sensor (shielded) |
| 9 | Y | Ignition Switch |
| 10 | N/A | Blank |
| 11 | G | Unused Connector |
| 12 | R/W | Air Flow Meter |
| 13 | N/A | Blank |
| 14 | N/A | Blank |
| 15 | Y | Fuel Temp Sensor |
| 16 | B | Air Reg |
| 17 | G/B | Crank Angle Sensor (shielded) |
| 18 | P/L | TVS |
| . | . | . |
| 21 | W | Detonation Sensor (shielded) |
| 22 | Y/G | A/C Relay, Headlamp Switch |
| 23 | Y/G | Pres Reg Con Modulator, CHTS |
| 24 | B | Oxygen Sensor (shielded |
| 25 | L/G | TVS |
| 26 | B | Cyl Head Temperature Sensor, Air Flow Meter |
| 27 | B/W | Pin #35 |
| 28 | B | Pin #36 |
| 29 | PU | Combo Meter (Vehicle Speed Sensor) |
| 30 | Y/G | Air Flow Meter |
| 31 | B | Air Flow Meter (shielded) |
| 32 | N/A | Blank |
| 33 | N/A | Blank |
| 34 | G/W | Ignition Coil, 15A Fuse in Fuse Block |
| 35 | B/W | Air Flow Meter (shielded), AAC, EGR Control Soleniod, Crank Angle Sensor |
| 36 | B | Bonding Wire for Sheilding, Crank Angle Sensor (shielded) |
| . | . | . |
| 101 | G | Injector #1 |
| 102 | G/B | Injector #2 |
| 103 | G/L | Injector #3 |
| 104 | G/Y | Injector #4 |
| 105 | G/R | Injector #5 |
| 106 | G/W | Injector #6 |
| 107 | B | Ground, FICD Soleniod Valve; Pins #109, 112, 113 |
| 108 | B | Fuel Pump Relay (shielded), Fuel Pump (shielded) |
| 109 | B | Same as #107 |
| 110 | N/A | Blank |
| 111 | N/A | Blank |
| 112 | B | Same as #107 |
| 113 | B | Same as #107 |
| 114 | R | Fusible Link, 12v + source for Injectors |
| 115 | Y | Presure Regulator Control Modulator, Oxygen Sensor |
84 non-turbo computer pin out
84 ECCS Connector
| Pin | Wire Color | Destination |
| 1 | X | Not used |
| 2 | L | FICD/ Idle up Solenoid |
| 3 | L | Ignition Coil, Power Transistor |
| 4 | L/W | EGR Control Solenoid |
| 5 | G/B | Power Transistor |
| 6 | R | EFI Relay |
| 7 | N/A | Blank |
| 8 | G/Y | Crank Angle Sensor (shielded) |
| 9 | Y | Ignition Switch |
| 10 | N/A | Blank |
| 11 | G | Unused Connector |
| 12 | R/W | Air Flow Meter |
| 13 | N/A | Blank |
| 14 | N/A | Blank |
| 15 | Y | Fuel Temp Sensor |
| 16 | B | Air Reg |
| 17 | G/B | Crank Angle Sensor (shielded) |
| 18 | P/L | TVS |
| . | . | . |
| 21 | N/A | Blank |
| 22 | Y/G | A/C System, Headlight Switch |
| 23 | Y/G | Pressure Regulator Control Modulator, Cyl Head Temperature Sensor |
| 24 | B | oxygen Sensor |
| 25 | L/G | TVS |
| 26 | B | Cyl Head Temperature Sensor, Air Flow Meter |
| 27 | B/W | to Pin #35 |
| 28 | B | to pin #36 |
| 29 | N/A | Blank |
| 30 | Y/G | Air Flow meter |
| 31 | B | Air Flow Meter (shielded) |
| 32 | N/A | Blank |
| 33 | N/A | Blank |
| 34 | G/W | Ignition Coil, 15amp fuse in fuse box |
| 35 | B/W | Air Flow Meter (shielded), FICD/Idle up solenoid, EGR control solenoid, Crank Angle Sensor (shielded), L/R to Pressure Control Solenoid, G to Pressure Regulator Control Modulator |
| 36 | B | Bonding wire for shielding, Crank Angle sensor(shielded) Pressure Regulator Control Modulator, unused connector |
| . | . | . |
| 101 | G | injector #1 |
| 102 | G/B | Injector #3 |
| 103 | G/L | Injector #5 |
| 104 | G/Y | Injector #2 |
| 105 | G/R | Injector #4 |
| 106 | G/W | Injector #6 |
| 107 | B | Ground, FICE Solenoid valve, Pins # 109, 112, 113 |
| 108 | B | Fuel pump relay (shielded), Fuel Pump (shielded) |
| 109 | B | Same as #107 |
| 110 | N/A | Blank |
| 111 | N/A | Blank |
| 112 | B | Same as #107 |
| 113 | B | Same as #107 |
| 114 | R | Fusible link, 12v + source for Injectors |
| 115 | Y | Pressure Regulator Control Modulator, Oxygen Sensor |
86 computer pin out
86 ECCS Connector| Pin | Wire Color | Destination |
| 1 | R | not used |
| 2 | L | AAC Valve on turbo cars/Idle-up Solenoid on non-turbo |
| 3 | L | Ignition Coil, Power Transistor |
| 4 | L/W | EGR Control Solenoid |
| 5 | G/B | Power Transistor |
| 6 | R | EFI Relay |
| 7 | SB | Combination Meter (Digital Dash) |
| 8 | G/Y | Crank Angle Sensor (shielded) |
| 9 | Y | Ignition Switch |
| 10 | BR | Neutral Switch (manual transmission) or Inhibitor Switch (automatic transmission) |
| 11 | G | Not used |
| 12 | R/W | Air Flow Meter |
| 13 | N/A | No Pin |
| 14 | Y/G | AVI Solenoid |
| 15 | Y | Fuel Temperature Sensor |
| 16 | B | Air Regulator |
| 17 | G/B | Crank Angle Sensor (shielded) |
| 18 | P/L | Throttle Valve Switch |
| . | . | . |
| 21 | W | Detonation Sensoe (shielded) Turbo cars only |
| 22 | Y/G | A/C system and power steering switch (non-turbo) / FICD solnoid valve and A/C compressor relay (turbo) |
| 23 | Y/G | Cyl Head Temperature Sensor |
| 24 | B | Oxygen Sensor (shielded |
| 25 | L/G | Throttle Valve Switch |
| 26 | B | Cyl Head Temperature Sensor and Air Flow Meter |
| 27 | B/W | to pin #35 |
| 28 | B | to pin #36 |
| 29 | PU | Combo meter(Vehicle Speed Sensor) (turbo) |
| 30 | Y/G | Air Flow Meter |
| 31 | B | Air Flow Meter (shielded) |
| 32 | N/A | no pin |
| 33 | N/A | no pin |
| 34 | G/W | Ignition Coil/ 15 amp fuse in fuse box |
| 35 | B/W | Pressure Regulator control valve, EAI solenoid, EFI relay, EGR control Solenoid, Crank Angle Sensor (shielded), Idle up solenoid ( non-turbo) AAC valve (turbo), Air Flow Meter |
| 36 | B | Bonding wire for shielding, Crank angle sensor (shielded) Body Ground |
| . | . | . |
| 101 | G | Injector #1 |
| 102 | G/B | Injector # 2 (Turbo) Injector #3 (Non-Turbo) |
| 103 | G/L | Injector # 3 (Turbo) Injector #5 (Non-Turbo) |
| 104 | G/Y | Injector # 4 (Turbo) Injector #2 (Non-Turbo) |
| 105 | G/R | Injector # 5 (Turbo) Injector #4 (Non-Turbo) |
| 106 | G/W | Injector # 6 |
| 107 | B | FICD Solenoid Valve /Pins # 109,112,113 and body ground |
| 108 | B | Fuel pump relay (shielded)/ Fuel pump (shielded) |
| 109 | B | Same as 107 |
| 110 | N/A | No Pin |
| 111 | N/A | No Pin |
| 112 | B | Same as 107 |
| 113 | B | Same as 107 |
| 114 | R | Fusible Link, 12v + source for Injectors |
| 115 | N/A | No Pin |
Notes:
- Most control voltages seem to be negative such as fuel pump, injectors and the Ignition coil. Because of this, a good ground is important!
- The injector wiring difference between T’s and NA’s might be a contributing cause to hesitation’s after the injector campaign. There is not much of a difference between the T and NA’s wiring, most notably the difference in wiring of the FICD and AAC valve on the T’s and FICD and Idle-up solenoid on the NA’s.
- Ther are not many differences between the 84 and 86, notably the lack of the fuel pressure regulator control module (pin #115). Also noted are the lack of the headlight switch (pin #22) which probably effects the idle speed and the addition of the AIV (air injection valve) on the 86 models.