Wiring Color Codes, ECU Pin Out, and Photos.Wiring Color Code ChartW = WhiteBK = BlackOR = OrangeBR = BrownCL = ClearR = RedY = YellowG = GreenBL = BlueV = Violet (purple)GY = GrayLT.G = Light GreenNote: Two color description means the wire has a main color and a'tracer' stripe along the wire of another color.i.e. R/Y = Red wire with Yellow StripeECU Pin Out MAC-02Main ECU connector pin out, 25 pins.With the ECU removed from the car, and looking at release tang nextto the pressure sensor port connection, Pin 1 is first pin on the bottomfar left, Pins 2-13 follow on to the right, Pin 14 is first pin on theleft, upper row, Pins 15-25 follow on the top row to the right.1. Ignition Module Ground return3. No connection4. Hall Sender ground return5.
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O2 Sensor shield6. O2 signal wire7. No connection8. Coolant Sensor11.
RPM Sensor signal12. TDC Sensor signal13. TDC Sensor signal14.
Terminal 15 Ignition +12V15. Idle Switch16. Fuel Pump Relay control17. Ignition Control Unit signal18. Intake air temp sensor19. Intake air temp sensor20.
Hall Sender + 12V21. Full Throttle switch22.
Hall Sender timing signal23. RPM sensor shield ground24. RPM Sensor signal25. TDC Sensor Shield groundMAC-02 ECU PhotoHere is what the inside of the MAC-02 looks like.ECU Pin Out MAC-07Main ECU connector pin out, 35 pins.When the ECU is installed in the car vertically, Pin 1 is the firstpin on the right, closest to passenger door, i.e. Towards the rear ofthe vehicle. (next to the connector release tab end). Pins 2-18 followforward on the right side row.
Pin 19 is the first pin on the left,with its position shifted slightly forward of Pin 1. Pins 20-35 followforward on the left row.With the ECU removed from the car and looking at the ECU at the connectorend, with the metal mounting tab down and to your right.
The ECU connectorPin 1 is first pin on the bottom row to the left, Pins 1-18 follow onthe bottom row to the right, Pin 19 is first pin on the top row to theleft, Pins 19-35 follow on the top row to the right.1. Cold Start Valve2. Ignition Module Ground3. No connection4. Hall Sender return ground5. CIS Freq Valve9. Coolant Sensor11.
RPM Sensor signal12. TDC signal +13. TDC signal -14. No connection15.
Knock Sensor Positive16. Knock Sensor ground/shield17. Boost Gauge18. Waste Gate solenoid control20.
Idle Switch21. Fuel Pump relay ground control22. Ignition Module control signal23.
Intake Air Temp sensor ground return24. Intake Air Temp Sensor +25. Hall Effect +12V supply26. Full Throttle Switch27. Hall Sensor signal28. RPM/TDC shield wire29.
RPM return ground30. O2 Sensor shield ground31. Fault code light control32. Brake Light Switch33. O2 sensor output34.
No connection35. +12 Voltage from ignition switchMAC-07 PhotoHere is what the inside of the MAC-07 ECU looks like.ECU Pin Out MAC-10/MAC-11Main ECU connector pin out, 35 pins.When the ECU is installed in the car vertically, Pin 1 is the firstpin on the right, closest to passenger door, i.e. Towards the rear ofthe vehicle. (next to the connector release tab end). Pins 2-18 followforward on the right side row. Pin 19 is the first pin on the left,with its position shifted slightly forward of Pin 1. Pins 20-35 followforward on the left row.With the ECU removed from the car and looking at the ECU at the connectorend, with the metal mounting tab down and to your right.
The ECU connectorPin 1 is first pin on the bottom row to the left, Pins 1-18 follow onthe bottom row to the right, Pin 19 is first pin on the top row to theleft, Pins 19-35 follow on the top row to the right.1. Cold Start Valve2. Ignition Module Ground3. Charcoal Canister Filter solenoid (negative supply)4. Decel Valve5. Code wire, connected for Automatic Transmission cars7. CIS Freq Valve9.
Coolant Sensor11. RPM Sensor + (Y)12. TDC signal -13. TDC signal +14. Over temp switch15.
Knock Sensor signal16. Knock Sensor ground/shield17.
Boost Gauge18. Waste Gate solenoid control20. Idle Switch21. Fuel Pump relay ground control22. Ignition Module control signal23. Intake sensor and Hall sensor ground return24.
Intake Air Temp Sensor25. Hall Effect +12V supply26. Full Throttle Switch27. Hall Sensor signal28. RPM/TDC shield wire29. RPM return ground30. O2 Sensor shield ground31.
Fault code light control (fuel pump fuse contact)32. Brake Light Switch33. O2 sensor output34. California Code wire, connect for California vehicles35. +12 Voltage from ignition switchMAC-11 ECU PhotoHere is what the inside of the MAC-10, MAC-11 and MAC-12 ECU's looklike.ECU Supply Voltage check and PressureSensor testIf you have an intermittent running problem with excessive pingingand this is related to the dash boost gauge giving strange readings,the ECU internal pressure sensor may be having a problem.
The ECU maystore a 2222 fault code and the 'Check Engine' light may also come onif the ECU pressure sensor is acting up. You should verify the hosefrom the intake manifold to the ECU is not leaking and make sure ithas not come loose.
If the ECU internal Pressure Sensor is not gettingthe correct boost pressure, the engine may ping very badly as the ECUwill not know that it needs to retard the timing while under boost.With the ignition key on, but with the engine not running, you shouldsee 0.9 to 1.0 bar on the dash gauge if you are near sea level altitude.The gauge reads out 'absolute' pressure from 0.0 to 2.0 bar, above 1.0you are seeing positive manifold pressure, i.e. Turbo boost.You may also have a ground or +12V supply problem either on the engineor a problem with the supply power or ground to the ECU. You could alsohave a failure of the pressure sensor inside the ECU.If the dash problem is a separate problem and not related to the runningof the car, it could just be a malfunction of the circuit board computeron the dash gauge pod assembly.You should check the ground wires that connect to the rear area onthe intake manifold on the engine. Remove the bolt and make sure thethreads are clean and re-tighten. The main ground strap on the enginedown below near the left side engine mount should be checked as well.You should measure the +12V supply going to the ECU using a DigitalVoltmeter. Pin 35 is the +12V supply, Check the voltage from pin 35to both pins 18 and 9 as these two are the ground connections on theECU. With the ignition key on, you should measure 12-13 Volts acrossthese pins.
You may want to remove the one screw holding the ECU againstthe body and pull it out to make checking the voltages easier. Leavethe ECU connector plugged in during the test.To check out the boost gauge signal coming from the ECU which comesfrom the internal Pressure sensor, connect a DMM across Pins 17 (+)and Pin 18 (-) and with the ignition key on, you should measure between2.5 to 2.7 volts if you are near sea level altitude. This would correspondto a 0.9 to 1.0 reading on the dash boost gauge. These pins are thelast two pins which are the farthest forward and next to the body whenthe ECU is mounted in the car. In other words, these two pins for theboost gauge output are ones hardest to get to.If you don't get this voltage reading then you might have a defectivepressure sensor inside the ECU or a short between the ECU and the boostgauge assembly. If the wire from the boost gauge to the ECU is shorted,it should not really affect the operation of the ECU to control theengine, because inside the ECU this boost gauge output circuit is isolatedfrom the rest of the internal pressure sensor signal used to controlboost and timing.If you are really brave, you can remove the ECU cover and use a DigitalMultimeter to test the pressure sensor. You want to see if it is gettinga good + 5 Volt supply and see if it has the correct output voltage.There is a +5 Volt regulator inside the ECU that supplies power to thissensor and the other circuitry.
Be VERY careful when probing aroundinside the ECU with the DMM. Pin 2 of the sensor is the +5V supply.The ground supply pin (19) on the pressure sensor is the one directlyopposite Pin 2 on the other side of the pressure sensor. The sensoroutput voltage is on Pin 1.
This sensor only uses three pins for operation,all the other pins are used to support the sensor and hold it off thecircuit board.This sensor is used in the MAC-05, 07, 10, 11, 12, 13, and MAC-14 ECU'sso this test can be used on these other ECU's. As mentioned before,with the ignition key on but with the engine off, the pressure sensoroutput voltage should be between 2.5 to 2.7 volts when the car is nearsea level altitude. With a hand pump connected to the ECU sensor port,the sensor output voltage will rise up 'close' to the 5.0 volt supply,(4.95V) as the pressure applied is raised to 2.0 bar absolute. Thestock dash mounted boost gauge will normally read up to 2.0 bar, afew will read up to 2.1 bar but at that point it tops out and won'tread any higher.
The accuracy at this end of the range won't be verygood. Here is a photo of the pressure sensor with the Ground, + 5 Voltand sensor output voltage connections marked.ECU Pin Out MAC-12Main ECU connector pin out, 35 pins.With the ECU removed from the car and looking at the ECU at the connectorend, with the metal mounting tab down and to your right. The ECU connectorPin 1 is first pin on the bottom row to the left, Pins 1-18 follow onthe bottom row to the right, Pin 19 is first pin on the top row to theleft, Pins 19-35 follow on the top row to the right.1. Cold Start Valve2.
No connection4. No connection5. No connection7. Idle Stabilizer, Oil Pressure Warning Controller8.
CIS Frequency valve9. Chassis ground10. Coolant Temperature11. Engine RPM Sensor12. Ignition Timing Sensor13.
Ignition Timing Sensor14. Electronic Thermo switch15. Knock Sensor16. Knock Sensor (shield for above)17. No connection18.
Chassis ground19. Waste gate Control Valve20. Idle Switch21.
Fuel Pump Relay22. Electronic Ignition, Power Stage23. Air Temperature Sensor and Hall Sensor ground return24.
Air Temp Sensor25. WOT, Full Load Switch27. Hall Sensor28.
Shielding for 11, 12, 13, 2929. Engine RPM Sensor30.
No connection31. Fuel pump relay fuse holder, Fault codes32. No connection33. No connection34. Chassis ground35.
+12V Power from ignitionECU Pin Out MAC-14Main ECU connector pin out, 35 pins.When the ECU is installed in the car vertically, Pin 1 is the firstpin on the right, closest to passenger door, i.e. Towards the rear ofthe vehicle. (next to the connector release tab end).
Pins 2-18 followforward on the right side row. Pin 19 is the first pin on the left,with its position shifted slightly forward of Pin 1. Pins 20-35 followforward on the left row.With the ECU removed from the car and looking at the ECU at the connectorend, with the metal mounting tab down and to your right. The ECU connectorPin 1 is first pin on the bottom row to the left, Pins 1-18 follow onthe bottom row to the right, Pin 19 is first pin on the top row to theleft, Pins 19-35 follow on the top row to the right.1. Cold Start Valve2. Knock Sensor #2 Signal3. Charcoal Canister Filter solenoid control signal4.
Decel Valve5. Engine Control Lamp control (Tan connector)6. T6F/4 Flash Code Connector W/BL7.
Coolant Sensor11. RPM Sensor signal12. TDC Shield and ground13. TDC Signal14. Over temp switch15. Knock Sensor #1 Signal16. Knock Sensor ground/shield17.
Boost Gauge18. Ground (O2 sensor)19. Waste Gate solenoid control20. Idle Switch21.
Fuel Pump relay control22. Ignition Module control23. Charcoal Canister shut off (small rear valve)24. Intake Air Temp Sensor25. Hall Effect +12V Supply26. Full Throttle Switch27.
Hall Sensor timing signal28. Tan diagnostic connector, upper terminal BL/Y wire29.
RPM Sensor Shield and ground.30. O2 sensor signal31. Blue Diagnostic Connector, upper pin Y/BK wire32. Brake Light Switch33. Black Diagnostic Connector, upper pin +12V BLK wire34. Coding connector35. +12V Ignition supply from Terminal 15MAC-14 ECU PhotoHere is what the inside of the MAC-14 ECU looks like.Copyright © SJM Autotechnik™, all rights reservedReturn to page.Return to mainpage.
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Hello Before replacing an other one, replace the freewheeling capacitor, the capcitor fitted between the collector of the 2222 and earth; usually of a value of 3500pf 2000VDC, some times this value may differ from set to set. If this capacitor has opened of developed in value, the result will be the failure of the horizontal output transistor, at switch ON itself.
The second reason is the short in horizontal yoke windings. Even one winding get shorted, it will cause to a heavy load flyback transormer which in turn to 2222 failure. The last reason for this fault is defective Line Output Transformer itsef. Check these three. Before proceeding, desolder out the horizontal output transistor 2222 fro circuit, and measure the frequency at the collector point of horizontal driver transistor. It should be around 15625HZ may differ a little, with no signal. If this frequency is found higher than normal, The main IC jungle should be suspected.
Anyway, go forward after checking this frequency. Posted on Jun 10, 2011. Check and replace damaged component/s at its horizontal scan output section circuit.
Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor.
Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts. Type in this key phrase ' my service table today ' in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site. The search result might display about 20 Nos of related posts.
Press the 'All posts' at the bottom of the list, then you can select them one by one. Feb 17, 2017. Hello Check its horizontal output transistor for short circuit. It is a common fault to all type of CRT based TVs, and show this type of fault. If it is found shorted collector to emitter, the LOT should also be checkd for winding short internal.
Normally; LOT cannot be checked with normal measuring instruments. If LOT has internal winding short, the horizontal output transistor will get overheated and finally shorted. Replace the horizontal output transistor first, and check whether it heats up ubnormally within seconds after switch ON the Tv. If it heats up so, make sure that the LOT is defective, and it should also be replaced.
Feb 28, 2012. Hello You just replace the capacitor fitted very near to the horizontal output transistor,freewheeling capacitor, there may be one or two of them, whcih comes to a value of 3900pf to 6700pf 2000V or so. It is connected to the negative rail and the collector of the horizontal output transitor.
If it gets opened, or its value gets reduced, this fault will occur. If so the transistor you replace will get shorted as you swich on the power to TV. The second one is deflection yoke short. If so the transistor said above will overheat within seconds. Even a single winding inside the horizontal deflection yoke shors, it puts a tremendous load to flyback transformer, which in turn effects the transistor. After replacing the above said capacitor, you do one thing to make sure about whether there is a short inside the yoke or not.
It cannot be measured by normal methods. Fore that, unplug the base card from picture tube and place it somewhere near without getting any of its contacts to other parts inside your TV.
Ipc 2222 Pdf
This time only the EHT chord will be connected to picture tube. Unplug the horizontal yoke connection from main board.
Switch on the tv, and wait for some time, say at about 10 seconds, and check whether the transistor gets overheated or not If it does overheats now also, the winding or EHT retifier diodes inside your flyback transformer has some trouble, and it should be replaced with same type and number. If it does not overheats now, the deflection yoke's winding have some short in it. NB: Never connect the TV with base card is in postion while deflection yoke connection is isolated. Keep it unpluged.
Oct 27, 2010.
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