How to read Subaru CEL (GC8 stock ecu only)
Manually Reading ECU Codes for gc8's:
On GC8's faults can be displayed as pulses of the Check Engine Light. (If the Check Engine Light goes out there is no fault) In order to perform diagnostic (and ECU resets) you will need to connect some wires together under your steering column. Note, the following procedure is intended for Rs liberty's & Gc8's, it may apply to GD WRX also. 1. Make sure your ignition is OFF 2. Connect the Black ‘Read Memory’ connectors together as illustrated below. [IMG]http://www.scoobypedia.co.uk/uploads/Knowledge/classic_test_mode_connector.gif[/IMG] Figure 1 - Black and Green Connectors on GC8 [B]When the above are connected you are in diagnostics mode. [/B] 3. Turn your ignition ON and ‘read’ the ECU code(s) being reported according to the following instructions. Note, you may here relays clicking and your fan starting and stopping - this is normal when in diagnostics mode. 4. If no codes are indicated switch the ignition off and disconnect the diagnostic connectors In Diagnostic Mode – No Fault is indicated by the Check Engine Light continuously & evenly flashing on/off (this is also used to indicate the successful completion of an ECU Reset). The long pulses (1.3 Seconds) indicate Tens and the short pulses (0.2 Seconds) indicate ones. Pulses are separated by Short Pauses (0.2 Seconds), multiple codes are separated by a Long Pause (1.8 Seconds). The simplest way for an inexperienced mechanic to retrieve codes is to write the codes down in a sort of Morse Code (dots and dashes), and start a new line when you get a 1.8 Second pause (for NEW code), and then add the actual numbers up after code retrieval is completed. Note – not all error codes are not stored and are not documented (though they are all decoded by a Select Monitor) some of these may be found in the next section. Code ITEM 11 Crankshaft position sensor 12 Starter switch 13 Camshaft position sensor 21 Engine coolant temperature sensor 22 Knock sensor 23 Mass air flow sensor 24 Idle air control solenoid 31 Throttle position sensor 32 Oxygen sensor 33 Vehicle speed sensor 2 35 Purge control solenoid valve 42 Idle switch 44 Wastegate control solenoid valve 45 Pressure sensor –Pressure exchange solenoid valve 51 Neutral position switch Other Subaru Codes These codes are not documented in the Impreza Workshop manual but are mentioned in other Subaru Documentation (and can be decoded by a Select Monitor), these may or may not be applicable to the Impreza. Code ITEM 11 Crank angle Sensor or Circuit 12 Starter Switch or Circuit 13 Cam Position Sensor or Circuit (TDC Sensor on Justy) 14 Fuel Injector No. 1 (Legacy, Impreza, Justy, SVX) 15 Fuel Injector No. 2 (Legacy, Impreza, Justy, SVX) 16 Fuel Injector No. 3 (Legacy, Impreza, Justy, SVX) 17 Fuel Injector No. 4 (Legacy, Impreza, SVX) 18 Fuel Injector No. 5 (SVX) 19 Fuel Injector No. 6 (SVX) 21 Coolant Temperature Sensor or Circuit 22 Knock Sensor or Circuit (Right Side on SVX) 23 Air Flow Meter or Circuit (Exc. Justy) 24 Air Control Valve or Circuit (Exc. Justy) 25 Fuel injector No. 3 and 4 (XT-6) 26 Air Temperature Sensor (Justy) 28 Knock Sensor No. 2 (SVX, Left Side) 29 Crank Angle Sensor (SVX, No. 2) 31 Throttle Position Sensor or Circuit 32 Oxygen Sensor or Circuit (No. 1, Right Side, On SVX) 33 Vehicle Speed Sensor (VSS) or Circuit 34 EGR Solenoid or Circuit 35 Purge Control Solenoid or Circuit 36 Air Suction Solenoid Valve (Impreza) 37 Oxygen Sensor (No. 2, Left Side, On SVX) 38 Engine Torque Control (SVX) 41 Air/Fuel Adaptive Control 42 Idle Switch or Circuit 43 Throttle Switch 44 Wastegate Duty Solenoid (Turbo Models) 45 Pressure Sensor Duty Solenoid (Turbo Models) 45 Atmospheric Pressure Sensor or Circuit (Non-Turbo Models) 46 Neutral or Parking Switch or Circuit 47 Fuel Injector 49 Airflow Sensor 51 Neutral Switch (Manual Transmission Models) 51 Inhibitor Switch (Automatic Transmission Models) 52 Parking Brake Switch (Exc. Justy) 53 Fuel Pump or Circuit 54 Choke Control System 55 EGR Temperature Sensor or Circuit 56 EGR System 57 Canister Control System 58 Air Control System 61 Fuel Tank Pressure Control Solenoid (Impreza) 62 Fuel Temperature Sensor (Impreza) 63 Fuel Tank Pressure Sensor (Impreza) 64 Vacuum Line Control Valve or Circuit 65 Vacuum Pressure Sensor 66 Sequential turbo system 67 Exhaust valve solenoid (positive pressure) 68 Exhaust valve duty solenoid 71 Ignition Pulse System 73 Ignition Pulse System 74 Ignition Pulse System 88 TBI Control Unit |
cheers rossco, this chart proves to be helpful :)
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:thumbsup:
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Awesome stuff Rossco!!!
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Great info Rossco. :)
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Repped for hax 01100111 01101111 01101111 01100111 01101100 01100101 skillz.
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code 44 Stace.....lol!
P.s Matt: posted [B]04-11-2009[/B], 11:44 PM |
loving the rebirth
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Repped for hax 01100111 01101111 01101111 01100111 01101100 01100101 skillz.
103 111 111 103 108 101 in decimal. |
Bump - will this work with my car?
V4 conversion (loom ecu etc) Thing is giving me the shits hard with random running crap and check engine lights. |
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