1997 HONDA CIVIC Repair

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Page 464 of 2189

HONDA CIVIC 1997 6.G Workshop Manual I
I
(From page 11-194)
Repair open or short in the wirebetween ECM lAl2l and IAC
Check the IAC valve Iunction:Momentarily connect ECM con-
nector terminals A12 and A10
with a jumPer wire several times

Page 465 of 2189

HONDA CIVIC 1997 6.G Workshop Manual ldle Gontrol System
ldle Air Control (lAG) Valve (99 - 00 Dl6Y8 engine with M/T, Bt6A2 enginel
[Fl50g l ]h" scan tool indicates Diagnostic Trouble Code (DTC) P1508: A problem in the ldle Air Controt

Page 466 of 2189

HONDA CIVIC 1997 6.G Workshop Manual t
I
{From page 11-196)
Repair opon or short in lhe wire
between EcM lBzl) and lAc valve.ls there battery voltage?
Check the IAC valve fundion:Momentarily connect ECM con-
nector terminals 823 and 82 w

Page 467 of 2189

HONDA CIVIC 1997 6.G Workshop Manual ldle Control System
ldle Air Control (lAC) Valve (96 - 98 A/T and Dl6Y7 enginel
The (Rotary) IAC Valve changes the amount of air bypassing the throttle body in response to a current signal from theEC

Page 470 of 2189

HONDA CIVIC 1997 6.G Workshop Manual I
I
L
IACV N(oRN)*IACV P{BLK/BLU
ECM/PCMCONNECTON B (25PI
IACV N(oRNt.
Wire side of female terminals
IAC VALVE 3P CONNECTOR
IACV NIACV P
IACV P
IBLK/BLUI
IGP
Terminal side of male
(From page 11 200)

Page 471 of 2189

HONDA CIVIC 1997 6.G Workshop Manual ldle Control System
Starter Switch Signal (96 - 98 Models,99 - 00 D16Y5 engine with M/Tl
Thjs signals the ECM/PCM when the engine is cranking.
NOTE:. A/T: Transmission in E or E position. M/T: in ne

Page 472 of 2189

HONDA CIVIC 1997 6.G Workshop Manual \
Starter Switch Signal (99 - 00 Models except Dl6Y5 engine with M/T)
NOTE:. M/f: Clutch pedal must be depressed.. A,/T: Transmission in E or E position
ECM,/PCM CONNECTORS
I
This signals the ECM/PCM

Page 474 of 2189

HONDA CIVIC 1997 6.G Workshop Manual (From page 11-204)
Check for an open in the wir€(ACC linel:Momentarily connect underhood
fuse/relay box 9P connector teF
minal No. 5 to body ground with
a iumper wire several times.
ls there a click