page 112 HONDA CIVIC 1996 6.G User Guide

ldle Control System
Automatic Transaxle (CVTI Gear Position Signal
('96 -98 D16Y5 engine with CW)
ATP NP{LT GRNI
INP
GBN)
This signals the ECM when the transmission is in @ or @ position.
Check the operation oI the A/Tgear position switch:1. Turn the ignition switch ON flt).2. Observe the A/T shift positionindicator and select each position separately.
See lhe A/T gear position indica-tor insp€ction {see sec{ion l/tl.
Check tor a short in the wir6 (ATpNP line):1. Turn the ignition switch OFF.2. Disconnect the 14P connectorIrom the gauge assembly.3. Disconnect the 26P connectorfrom the TCM.4. Turn the ignition switch ON fll).5. Measure voltage between ECMconnector terminals A9 andc29.
Check for a short in the wire lATpNP linell1. Turn the ignition switch OFF.2. Disconnect the ECM connector C (31P).
3. Check for continuity betweenbody ground and ECM connector terminal C29.
ls there approx. 5 V?
Check for an open in the wire lATpNP lina):1. Turn the ignition switch OFF_2. Beconnect the 14P connectorto the gauge assembly.3. Reconnect the 26P connectorto the TCM.4. Sta rt the engine.5. Measure voltage betweenECM connector terminals A9and C29 with the transmission in E and E posationt
Repair short in the wire betweenthe ECM {C291 and the gaugeassemblv,
Substitute a known-good ECMand recheck. lf prescribed volt-age is now avrilable, replace theo.iginalECM.
Wire side ot female terminals
2457I910
t112131a15151718
2321252930
ATP(LT io
(To page 11'217)
11-216

From page 14-84
Measule ATP NP Voltage:
1. Shift to all positions other thanpl or E.2. Measure the voltage between
the D13 and 820 or 822 termi-
nals.
Check for ahott in lhe wire
between ths D13 torminal and
tho A/T go.r PGition iwitci, and
in rho E .nd E polition signal
wires Mwgon tho A/T gsar Posi'tion indicrtor and th. A/T gGar
po3ition 3witch. ll wiJ.! .ro OK,
check lor loose torminal fit in the
PCM connoctor3. lf nocet3.rY,
substitute . known-good PCM
and r6check.
ls there baftery voltage?
Measure ATP D4 voh.g€:
1. Shiftto all positions otherthan
E2. Measure the voltage between
the Dg and 820 or 822 termi-nals.
Ch.ck lor 3hort in ths wilo
betweon tho lxl termin.l and tho
A/T ge.r pGhion switch. It wites
are OK. chock fo. looao t€rminal
fit in the PCM conn.ctoB. lf noc_
.*sary, sulFtitute a known-goodPCM .nd rechock.
ls there approx. 5 V?
Moa3ure ATP D3 Vohsge:
1. Shift to all positions other than
tr.2. Measure the voltage betweenthe D8 and 820 or 822 termi-
nals.
Check tor 3hort in the wits
betweon the D8 torminal and the
A/T goer position switch or A/Tgcar position indicltor. It wires
are OK, check for loo3€ torminalfit in tho FCM conn€ctoG. lf nec_
a3$ry, 3ubatitute e known'goodPCM and r.check.
ls there battery voltage?
To page l4'86
PCM CONNECTORS
o t16PlB {25P)
LGl (BRN/BLK)
g t25P)
LGl (BRN/8IJ()
LGl IBRN/BLK)
GRN)
D t16P)
IYEL)
231115 l68 112tV-s-
10n\/t7/ 167I910 t12
I
o zlzz /l/1,/ 113TIL---{O--l\=/LG2{BRN/BLKI
,/t\_
\a t9
ATP NP (LT
Wirc side o{ female termlnals
31158ll25
910111/t6l/17ls lt la112
20) W Wl/l '3111/ll
+LG2 (BBN/BLKI
-<_
ATP D4
LG2 (BRN/BLK}
14-85

Electrical Troubleshooting ('gg - 00 Models)
Troubleshooting Flowchart - A/T Gear position Switch Open {cont,d)
PCM CONNECTORS
B l2sPlD {16P)
124156I
91011)./t5l/11189112
zo ztzzl l//l hsr),41
f ]_c;l
j r-cz tgaNlelxr -ATP D4
Wire side of lemale terminals
(YEL}LGl {BRN/BI.KI
I.G1 IERN/BLKI
B (25P1
LGl IBRN/BLKI
D {16P}
From page 14-87
Moalure ATP 04 Vohago:1. Shift to pll position.2. Measure the voltage betweenthe Dg and 820 or 822 terminals.
Repair opon in the wire betweonthe lrg terminal and the A/T goatposhion switch.
Measure ATP D3 Vohage:1. Shift to l& position.2. Measure the voltage betweenthe D8 and 820 or 822 termi-nats.
Reprir opcn in the wirc b?twoenthe D8 terminrl and tho A/T goarDosition twitch.
Mersurc ATP 2 Voltage:1. Shift to E position.2. Measure the voltage betweenthe Dl4 and 820 or 822 termi-nals,
Reprir opon in the wire betweontho Dl4 te.minal rnd the A/Tgo.r position switch.
Ch6ck tor loose terminal tit in thePCM connectors. ll necossery,subslitute . known-good pCM
and recheck.
LG2IBRN/BLKI
I25l l6l/8
91011)/Itsln78912
ATP 2 IBLUI
t..
14-88

Symptom-to-Component Chart
Hydraulic System (cont'dl
G.
n,
set idle rpm in gear to specified idle speed. lf still no good, adjust motor mounts as outlined in enginesection of this manual.
lf the clutch pack is seized or is excessively worn. inspect the other clutches for wear, and check the orificecontrol valves, CPC valve and linear solenoid for free movement.
lf the linear solenoid is stuck, inspect the clutches for wear.
lmproper alignment or main valve body and torque converter housing may cause ATF pump seizure. Thesymptoms are mostly an rpm-related ticking noise or a high-pitched squeak.
lf the l st clutch feed pipe guide in the end cover is scored by the mainshaft, inspect the ball bearing forexcessive movement in the transmission housing. lf oK, replace the end cover as it is dented. The o-rinounder the guide is probably worn.
Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged. lf the 4th feed pipe is danFaged or out of round, replace the right side cover.
Replace the mainshaft if the bushing for the 1st feed pipe is loose or damaged. lf the 1st feed pipe is darn-aged or out of round, replace it.
A worn or damaged sprag clutch is mostly a result of shifting the transmission inthe wheels rotate in reverse, such as rocking the vehicle in snow.
or E position while
Inspect for damage and wear:
1. Reverse selector gear teeth chamfers.
2. Engagement teeth chamfers of countershaft 4th and reverse gear.
3. Shift fork for scuff marks in center.
4. Differential pinion shaft for wear u nder pin ion gears.
5. Bottom of 3rd clutch for swirl marks.
Replace items 1,2,3 and 4 if worn or damaged. lf transmission makes a clicking, grinding orwhirring noise,also replace mainshaft 4th gear, reverse idler gear. and countershaft 4th gear in addition to 1, 2, 3 or 4.lf differential pinion shaft is worn, overhaul differential assembly, and replace ATF strainer, and thoroughlyclean transmission, flush torque converter, cooler and lines.lf bottom of 3rd clutch is swirled and transmission makes gear noise, replace the countershaft and final drivengear.
Be very careful not to damage the torque converter housing when replacing the main ball bearing, you
may also damage the ATF pump when you torque down the main valve body. This will result in ATF pumpseizure if not detected. Use the oroper roors.
Install the main seal flush with the torque converter housing. lf you push it into the torque converterhousing until it bottoms out, it will block the fluid return passage and result in damage.
See flushing procedure, page 14-187 and 188.
lf the large clutch piston O-ring is broken, inspect the piston groove for rough machining.
lf the l-2 shift valve is stuck closed, the transmission will not upshift. lf stuck open, the transmission hasno 1st gear.
lf the znd orifice control valve is stuck. inspect the 2nd and 3rd clutch oacks for wear.
lf the 3-4 orifice control valve is stuck, inspect the 3rd and 4th clutch oacks for wear.
lf the clutch pressure control valve is stuck closed, the transmission will not shift out of 1st gear.
lf the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump and differentialpinion shaft. lf both are OK and no cause for the contamination is found, replace the torque converter.
Inspect the frame for collision damage.
14-112

Shift Cable
Adjustment
@ Make sure lifts are ptaced properly (see
section 1).
1. Remove the front console (see section Z0l.
2. Shift to @ position. then remove the lock pin fromthe adiuster.
7 N.m (0.75 tbtftlkgtm.
14-190
3. Check that the hole in the adjuster is perfectlyaligned with the hole in the shift cable. There aretwo holes in the adjuster. They are positioned 90.apart to allow cable adjustment in 1/4 turn incre-ments.
ExactAlignment
4. lf the hole is not perfectly aligned, loosen the lock-nut on the adjuster and adjust as required.
5. Tighten the tocknut to 7 N.m (0.7 kgf.m, 5 tbf.ft).
6. Install the lock pin on the adjuster. lf you feel thelock pin binding as you reinstall it, the cable is stillout of adjustment and must be readjusted.
7. Make sure the lock pin is seated in the adjustersecuretv.
8. Move the shift lever to each gear, and verify that theshift position indicator follows the automatic trans-axle gear position switch.
9. Start the engine, and check the shift lever in allgears. lf any gear does not work properly, refer totroubleshooting (see page 14-109 thru 1'4-'112).
10. Insert the ignition key into the key cylinder on theAy'T gear position indicator panel, and verify that theshift lock lever is released.
CableToo ShortCableToo Long

Symptom-to-Component Chart
Electrical System -'96 - 98 Models
*: The DTC in parentheses is the code @ indicator light indicates when the Data Link Connector is connected to the HondaPGM Tester.
DTC*O Indicator
LightMILDetection ltemPage
P1790
(3)BlinksONThrottle position sensor14-242
P179'l
(4)BlinksONVehicle speed sensor14-243
P1705
(5)BlinksONAy'T gear position switch (short to groundl't 4-244
P1706
(6)OFFONA/T gear position switch {open)14-246
P0725
(11)BlinksONlgnition coil14-248
P1793
112lBlinksONManifold absolute pressure sensor14-249
P 1870(30)BlinksONShift control linear solenoid14-250
P'1873
(311BlinksONPH-PL control linear solenoid14-25'l
P1879(32)BlinksONStart clutch control linear sotenoid14-252
P1882BlinksONInhibitor solenoid14-253
P1885
(34)BlinksONDrive pulley speed sensor1l-Zb4
P1886(35)BlinksONDriven pulley speed sensor14-255
P1888
(36)BlinksONSecondary gear shaft speed sensor14-256
T to55
(37)BlinksONECM or TCM14-257
P1890
l42lBlinksONShift control system14-259
P1891
(43)BlinksONStart clutch control svstem14-260
14-23a

Troubleshooting Flowchart - TMA and TMB Signals
NOTE: Record all freeze data before you troubleshoot'
Possible Cause
. Shorl or op.n in TMA wi.o
botwo6n 87 terminal and ECM. Short or open in TMB wiro
bdtwoon BG to.min.l .nd ECM. F.ulty ECM. Faulty TCM
TCM CONNECTOR B (22P)
GRY
Wire side oI temale terminals
o
I2a58910
1213111516171820
GRY
ECM CONNECTOR C 13lPI
123a56l89r0
1112t3la1618//
29130 /
::)
I2a568910
12t3141516171820
. OBD ll Scsn Tool indicate3 Codo
P1655.. Self-diagnosb E indicator light
indicales Cod6 37.
Check TMA Wire Continuity:1. Turn the ignition switch OFF.
2- Disconnect the I (22P) con-
nector lrom the TCM
3. Disconnect the c (31P) con'
nector from the ECM
4. Check for continuity between
the 87 terminal of the TCM
and the Cg terminal oI the
ECM,
Ropail open in the wire betwcen
the TCM and the ECM.
Check TMA Wir€ for a Short Cir-
cuit:Check for continuity between the
87 terminal of the TCM or the Cg
terminal ol the ECM and bodyground.
check rhe EcM:1. Reconnect the C (31P) con'
nector to lhe ECM, and the B(22P) connector to the TCM
2. Turn the ignition switch ON (ll).
3. Measure the voltage between
the C9 terminal oI the ECM
and body ground.
Chock tor loose ECM connectors.
lf nscossary, subdituta a known'good ECM .nd lecheck.ls there approx. 10 V?
To page 14 258
(cont'd)
14-257

Ftom page 14 262
ls there battery voltage?
Measure Powet SUPPIY Ci.cuit
Voltage:1. Turnthe ignition switch ON (ll)
2. Measure the voltage between
terminals A12 and A13 and
between terminals A25 and
426.
Repair open or short in the wire
between the A'12 andlor Ms ler-
minrls and the under-dash fuse
DOX,
Measure D IND Voltage:1. Turn the ignition switch OFF
2. connect the A (26P) connec
tor to the TcM.
3. Connect a digkal multitester
to the A20 and A'13 or A26 ter
minals.4. Turn the ignition switch ON (ll),
and make sure that the voltage
is available for two seconds.
Check tor opon in the wire
between the A20 l6rminal and
the gaug€ assembly. It the wite
is OK, check tor a faultY ipl indi-
calor light bulb or a faulty gauge
assembly prir ed circuit boatd.
Check D INO for an Shott Circuit:1. Turn the ignition switch OFF
2. Disconnect the A (26P) con-
nector from the TCM.
3. Check for continuity between
the A20 terminal and the No. I
terminal of the gauge assem-bly connector (see section 23).
Bepair open in the wire between
the A20 terminal and the gauge
assembly.
Check tor looso TCM connecto.s.
Check the A/T ge.r Positionswitch. lf nec6ssary, substitute a
known-good TCM and r€check
BLK/WHTI
r
2a710111213
14t5161720232526
BLK/WHT
A
II
TCM CONNECTOR A I26P)
Wire side of female terminals
TCM CONNECTOR A (25P}
BLK
BLK
GRN/BLK
12a58910111213
1l15161720232526
o
GRN/BLK
GAUGE ASSEMBLY14P CONNECTOR
a5
78910111214
GRN/BLK
Wire side of female terminals

From page 14-289
Msaaure D IND Volt.ge:1. Turn the ignition switch OFF.
2. Connect tho B (25Plconnector
to the PCM.
3. Connect a digital multimeter
to the D14 and 820 or 822 ter-
mtnals.il. Turn the ignition switch ON(lll, and make sure that voltage
is available for two seconds
Check for open in the wire
between tha D14 terminal rnd
the gauge a33emblY. lf wiro ia
OK, chock for . frulty indicator
light bulb or a Iaulty gaug.
a3r6mbly printod circuit board.
Check D IND for a Short Circuit:
Check lor continuitY between the
D14 terminal and body ground.
Rgpair 3hort in the wire b.tween
the D14 tcrminal and tho gauge
a*somblY.
Check for loose terminsl fh in the
PCM connectors Check tho A/T
goar posilion switch. It neces'
saiy, iubstitute a known_good
PCM rnd rochock.
PCM CONNECTORS
D {16P1
(BRN/BI.X)D4 IND (GRN/BLK}
Wire side of female terminals
123rs 1/7I215
910nn fT /fl6l112
o lzlzz ,rl/zs 1311- -T---=4'+:l
LG2IBRN/BLKI\=/ |
r lz35
6i /l/t01112
l0
D' IND
o
IGRN/BLKI
4-289

Door and Side Moldings
Replacement
CAUTION: When prying with a flat-tip scr6wdrivgr, wrap it with protective tape to prevent damags'
NOTE;
. To remove the front side molding, remove the inner fender (see page 20-106)'
. To remove the door moiding, remove the door panel (see pages 20-4, 10, 16) and plastic cover.
. To removethe rearside molding, remove the side trim panel (see pages 20-60,611'
. Take care not to bend the door moldings.
. Before reassembling, clean the door bonding surface with a sponge dampened in alcohol'
. After cleaning, keep oil, grease and water from getting on the surface'
. lf necessary, replace any damaged clips.
4D:
FRONT DOORAdhesive areas.
2Dl3Dl
B>,3c>,2
REAR SIDEMOLOING
a: Plastic nut loc€tion. 1
@)
(cont'dl
20-103
MOLDING
>: Clip locations
A >: 4D, 112')13D,7