ShyBoyCA6
01-22-2013, 12:37 AM
I had an idea to add pictures to help verify and locate the problem. I will add pictures tomorrow for everything that i listed here to help confusion and the new guys. Mods Please feel free to sticky this if you like. Will update the thread with OBD1 Trouble Codes when i do my Obd1 swap.
How to check your ECU codes:
1. Move Driver seat all the way forward.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00110_zps1484d55a.jpg
2. Locate the Cover Flap on the ECU Cover.(Mine doesn't have the cover, yours should have a cover on it unless you removed it.)
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
3. Turn the Ignition on.(Position 2)
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00109_zpsb9ad3794.jpg
4. Open Flap and Look at the plastic glass.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
5. Count how many times the Led flashes.
6. Below are the Flash codes and what to check for.
For double digits it will blink once for 1 and pause and flash again for the second number.
ECU CODES for 86-89 Honda Accord and 85-89 Honda Prelude.
00 LED FLASH(s) ECU
Led will be on and steady with no flashes.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
What To Do: Replace Ecu with another one
01 LED FLASH(s) 85-98 Accord
Oxygen Sensor "A" (Primary)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00113_zps0166fba0.jpg
What To Do: Replace O2 Sensor with a new one.
What To expect with this Code: Car will have bad MPG/Run like crap. If going the same speed for a certain amount of time the light will go off and car will run rich.
Location: O2 Sensor "A" Is located on the LEFT and the color where it goes is GREEN. If Connected in the wrong place car will not run right and problem will occur again.
02 LED FLASH(s) 85-89 Accord
Oxygen Sensor "B"
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00113_zps0166fba0.jpg
Same as O2 "A" repeat the steps.
Location: O2 Sensor "B" Is Located on the RIGHT and color where it goes is WHITE.
03 LED FLASH(s) 85-98 Accord
MAP Sensor (Manifold Absolute Pressure)
Defective Circuit Or Unplugged / Defective Sensor
04 LED FLASH(s) Crank Angle
05 LED FLASH(s) 85-98 * Accord
MAP Sensor (Manifold Absolute Pressure)
Mechanical Problem / Disconnected Piping
* exc. 94-95
06 LED FLASH(s) 85-98 Accord
E.C.T Sensor (Engine Coolant Temperature)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00117_zpscbdff50f.jpg
Location: WHITE one On the RIGHT.
What To Do: Check Wires and Connections
What to expect: Hard To Start and Tach will Act funny.
07 LED FLASH(s) 85-98 Accord
T.P Sensor (Throttle Position)
Defective Circuit Or Unplugged / Defective Sensor
08 LED FLASH(s) 85-98 Accord
T.D.C Sensor (Top Dead Center)
Defective Circuit Or Unplugged / Defective Sensor
09* LED FLASH(s) 85-98** Accord
CYP Sensor (Cylinder)
Defective Circuit Or Unplugged / Defective Sensor
* Not a valid code for any throttle body injection Hondas
** Not a valid code for V-6 engines
10 LED FLASH(s) 85-98 Accord
IAT Sensor (Intake Air Temperature)
Defective Circuit or Unplugged / Defective Sensor
12 LED FLASH(s) 85-98 Accord
EGR Lift Sensor (Exhaust Gas Recirculation)
Defective Circuit Or Unplugged / Defective Sensor
13 LED FLASH(s) 85-98 Accord
BARO Sensor (Atmospheric Pressure)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00119_zpsc60034d9.jpg
Location: Passenger side behind the DASH
What To Do: Replace sensor and check connection/If removed Trouble code will appear
14 LED FLASH(s) 88-98 Accord
IAC Valve (Idle Air Control)
Defective Circuit Or Unplugged / Defective Sensor
IAC VALVE HELP
15 LED FLASH(s) Ignition Output Signal
16 LED FLASH(s) Fuel Injector
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00115_zps0f17873e.jpg
What To Do: Inspect wires and Connection/ Test Fuel Injector Or Replace/ Check Fuse Under Hood its A 10A.
17 LED FLASH(s) 88-98 Accord
VSS (Vehicle Speed Sensor)
Defective Circuit Or Unplugged / Defective Sensor
How to check your ECU codes:
1. Move Driver seat all the way forward.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00110_zps1484d55a.jpg
2. Locate the Cover Flap on the ECU Cover.(Mine doesn't have the cover, yours should have a cover on it unless you removed it.)
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
3. Turn the Ignition on.(Position 2)
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00109_zpsb9ad3794.jpg
4. Open Flap and Look at the plastic glass.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
5. Count how many times the Led flashes.
6. Below are the Flash codes and what to check for.
For double digits it will blink once for 1 and pause and flash again for the second number.
ECU CODES for 86-89 Honda Accord and 85-89 Honda Prelude.
00 LED FLASH(s) ECU
Led will be on and steady with no flashes.
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00111_zpsb70ca229.jpg
What To Do: Replace Ecu with another one
01 LED FLASH(s) 85-98 Accord
Oxygen Sensor "A" (Primary)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00113_zps0166fba0.jpg
What To Do: Replace O2 Sensor with a new one.
What To expect with this Code: Car will have bad MPG/Run like crap. If going the same speed for a certain amount of time the light will go off and car will run rich.
Location: O2 Sensor "A" Is located on the LEFT and the color where it goes is GREEN. If Connected in the wrong place car will not run right and problem will occur again.
02 LED FLASH(s) 85-89 Accord
Oxygen Sensor "B"
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00113_zps0166fba0.jpg
Same as O2 "A" repeat the steps.
Location: O2 Sensor "B" Is Located on the RIGHT and color where it goes is WHITE.
03 LED FLASH(s) 85-98 Accord
MAP Sensor (Manifold Absolute Pressure)
Defective Circuit Or Unplugged / Defective Sensor
04 LED FLASH(s) Crank Angle
05 LED FLASH(s) 85-98 * Accord
MAP Sensor (Manifold Absolute Pressure)
Mechanical Problem / Disconnected Piping
* exc. 94-95
06 LED FLASH(s) 85-98 Accord
E.C.T Sensor (Engine Coolant Temperature)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00117_zpscbdff50f.jpg
Location: WHITE one On the RIGHT.
What To Do: Check Wires and Connections
What to expect: Hard To Start and Tach will Act funny.
07 LED FLASH(s) 85-98 Accord
T.P Sensor (Throttle Position)
Defective Circuit Or Unplugged / Defective Sensor
08 LED FLASH(s) 85-98 Accord
T.D.C Sensor (Top Dead Center)
Defective Circuit Or Unplugged / Defective Sensor
09* LED FLASH(s) 85-98** Accord
CYP Sensor (Cylinder)
Defective Circuit Or Unplugged / Defective Sensor
* Not a valid code for any throttle body injection Hondas
** Not a valid code for V-6 engines
10 LED FLASH(s) 85-98 Accord
IAT Sensor (Intake Air Temperature)
Defective Circuit or Unplugged / Defective Sensor
12 LED FLASH(s) 85-98 Accord
EGR Lift Sensor (Exhaust Gas Recirculation)
Defective Circuit Or Unplugged / Defective Sensor
13 LED FLASH(s) 85-98 Accord
BARO Sensor (Atmospheric Pressure)
Defective Circuit Or Unplugged / Defective Sensor
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00119_zpsc60034d9.jpg
Location: Passenger side behind the DASH
What To Do: Replace sensor and check connection/If removed Trouble code will appear
14 LED FLASH(s) 88-98 Accord
IAC Valve (Idle Air Control)
Defective Circuit Or Unplugged / Defective Sensor
IAC VALVE HELP
15 LED FLASH(s) Ignition Output Signal
16 LED FLASH(s) Fuel Injector
http://i1274.photobucket.com/albums/y422/MarkyMark2289/CAM00115_zps0f17873e.jpg
What To Do: Inspect wires and Connection/ Test Fuel Injector Or Replace/ Check Fuse Under Hood its A 10A.
17 LED FLASH(s) 88-98 Accord
VSS (Vehicle Speed Sensor)
Defective Circuit Or Unplugged / Defective Sensor