ECU, Wiring, Sensors
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By projecthonda
#21364
Way to check codes on your civic (EF, EG, EK, Gen-1 CRV).
If you go to passanger side kick panel and raise up the carpet u sould see your ecu. and above your ECU there will be a plug. It has 2 wires coming out of it. I take a spare piece of thin speaker wire and cut off both ends so that the actual copper of the wire is showion on both ends. i twist up both ends so that they are in a nice point. stick one end of the wire into the first socket on the plug. The other end of the wire into the other socket.

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Turn your key to the ON position.. dont start your car. just to the ON position. Watch your check engine light on your cluster. it will flash.. 1 long flash is 10. the quick flashes are one. so if ur CEL goes !.....!!! that is a code 13. !....!....!!!!! code 25. then take the code #'s and hop on this thread and see what it is.

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4
80 Exhaust Gas Recirculation insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
90 Evaporative Emission Control System leak detected in the fuel tank area
91 Fuel Tank Pressure Sensor low input
92 Evaporative Emission Control System insufficient purge flow


***i dunno if this came from HT, i found it on our local forums as well :)

HTH
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By asianrob
#22394 the one one HT has the OBD2 codes also but thats ill-relevant here tho lol cuz our cars are ODB1 but if you need it lmk and i'll post OBD2 codes lol
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By ohDirka
#22444 this saves me from getting out the helms
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By chnzgoofball
#22465
D15kid wrote:this saves me from getting out the helms


helms??? :?
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By ohDirka
#22470 repair manual
By DannyCraQ
#49366 i cant find the one for my EJ2?

anyone know why? i can take a pic, but its not there....lool
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By asianrob
#49370
DannyCraQ wrote:i cant find the one for my EJ2?

anyone know why? i can take a pic, but its not there....lool


might have to dig in there its pretty hidden some of them have like a brown cap on it
By DannyCraQ
#49415 k i have two blue plugs that are seperate and i thought thats what it was


seems to be srs and summin else
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By asianrob
#49418
DannyCraQ wrote:k i have two blue plugs that are seperate and i thought thats what it was


seems to be srs and summin else


take a pic
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By blueeg6
#50443 lol thas cool how part of it is in tagalog
By Vtec Civic 93
#97298 My check engine light doesn't come on when the key is in the "ON" position, only after driving for awhile. Can i check it with the car running??
By sdots
#98238
Vtec Civic 93 wrote:My check engine light doesn't come on when the key is in the "ON" position, only after driving for awhile. Can i check it with the car running??


yes you can
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By 95civiceg
#127631 hey i got a 24 wat does that mean 0.o
its not on the list
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By 95civiceg
#127717 i could be readin it wrong an i could have a 1 and 14

02 sensor and IACvalve

i just changed the IACV which is weird that it would come up

the 02 sensor i havnt not messed with

if i have an OBD I b16a on my ej1. how many 02 sensors should i have
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By Ajax1989
#135119
95civiceg wrote:if i have an OBD I b16a on my ej1. how many 02 sensors should i have


1 it on the header b4 the cat