1999 HONDA CIVIC ac line

Component Locations
36 - 98 Models
BRAKE SWITCH
DRIVEN PULLEYSPEED SENSOR
INHIBITOR SOLENOID
ENGINE CONTROLMODULE IECMI
SECONDARY GEAR SHAFTSPEEO SENSOR
AUTOMATIC TRANSAXLE (A/T}GEAR POSITION SWITCI{
MANIFOLD ABSOLUTE
VEHICLE SPEEO SENSOR{vss}
IMAPI SENSOR
THROTTI.I POSITION {TPISENSOR
PH.PL CONTROLLINEAR SOLENOID
/i/ i,' / ,','4
,i/:1
t"--.---.- i,,
-_,-:-_a.--:
il
START CLUTCH CONTROLLINEAR SOLENOIDPULLEY
SHIFT CONTROLLINEAR SOLENOTD
$r,
14-224
h
SPEED SENSOR

'99 - 00 Models
CONTROL
AUTOMATIC TRANSAXLE IA/TI
GEAR POS]TION SW]TCH
MANIFOLD ABSOLUTESECONDANY GEAR SHAFT
SPEED SENSORIMAPI SENSOR
VEHICLE SPEED SENSOR
tvss)
THROTTLE POS]TION ITP)SENSOR
PH.PL CONTBOLLINEAB SOLENOIO
DNVEN PUL]-EY
SPEED SENSOR
START CLUTCH CONTROL
PULLEY
SHIFT CONTROLLINEAR SOLENOIO
LINEAR SOIENOID
SPEED SENSOR
14-225

TCM Terminal Voltage/Measuring Gonditions
('96 - 98 Modelsl
TCM Terminal Loc.tions
TCM-A l25P) Connecto.
TCM CONNECTOR A (26P}
TCM-B (22P) Connectot
2418910111213
1115161720232526
Terminal NumbetSignalDsscriptionMoasuring Conditions/Torminsl Vohrgo
A1SC LS_Stan clutch control linear solenoidpower supply negative electrodeEngine idling, E position:Approx. 0.4 VHLC LS-PH-PL control linear solenoid Dowersupply negative electrodeEngine idling, E position:Approx. 0.7 V
Shift control linear solenoid oowersupply negative electrodeEngine idling, E position:Approx. 0.8 V
A4LG1Ground
NEEngine speed signal inputWith engine running: Pulsing signalA6Not used
A7ATP LA/f gear position switch El positionsignal inputInEposition:OVIn other than El position: Approx. 1O VA8ATP Sly'T gear position switch E positionsignal inputIn lg position: 0 VIn other than E position: Approx. 10 VA9ATP DA{/T gear position switch E positionsignal inputIn lll position: 0 VIn other than E position: Approx. 10 VAr0ATP NPA,/T gear position switch E or Eposition signals inputInEorEposition:oVIn otherthan E orE position: Approx. 1O VA11ATP RA,/T gear position switch E positionsignal inputIn lE position: 0 VIn other than E position: Approx. 1O VA.12tGlPower supply systemWith ignition switch ON (ll): Banery voltsgeWith ignition switch OFF: 0 VA13PG1Ground
414Start clutch control linea. solenoidpower supply positive electrodeEngine idling, E position:Approx. 2.5 VA15HLC LS+PH-PL control line8|. solenoid powersupply positive electrodeEngine idling, El position:Approx. 5.0 VA16SH LS+Shift control linear solonoid oowersupply positive electrodeEngine idling, E position:Approx. 6.0 V417Ground
A18Not used
A19Not used
420D INDE indicator light controlWhen l9l indicator light comes on: Approx. jO VWhen lll indicator lighr OFF: 0 VA2'lNot used
422Not used
VBUBack-up power systemAlways battery voltage424Not used
A.25tG1Power supply systemWith ignition switch ON (lt): Baftery voltageWith ignition switch OFF:0 VPG1Ground
L
14-228

PGM Terminal Voltage/Measuring Conditions ('99 - 00 Modelsl
A/T Control System
The PCM terminal voltage and measuring conditions are shown for the connector terminals that are related to the A/T con-trol system. The other PCM terminal voltage and measuring conditions are described in section 11.
PICM Connoctor Terminrl Location3
Terminal NumberSignalDescriplionMeasuring Condhions/Torminal Voltage
A7ATP DA,/T gear position switch
E position input
InEposition:OV
In other than E] position: Approx. 1O V
A9ATP NPA/T gear position switch
@ and S positions input
In E and El positions: 0 V
In other than E] and E position: Approx. 1O V
A10Timing and adjustment service
check signal
With ignition switch ON {ll} and service check
connector oDen: 5 V
With ignition switch ON (ll) and service check
connector connected with soecialtool:0 v
ATP LA,/T gear position switch
I position input
In E position; OV
In other than E position: Approx. 10 V
STOP SWBrake switch signal outputBrake pedal depressed: Battery voltage
Brake pedal released: 0 V
PCM CONNECTOR B I25P}
Terminal NumberSignalDescriptionMoasuring Condhions/Terminal Vohage
B1IGPlPower supply circuit from main
relay
With ignition switch ON (lll: Battery voltage
With ignition switch OFF: 0 V
82PG1Ground
B8HLC LSMPH-PL control linear solenoidpower supply neqative electrode
B9IGP2Power supply circuit from main
relay
With ignition switch ON (lll: Battery voltage
With ignition switch OFF:0 V
810PG2Ground
817HLC LSPPH-PL control linear solenoid
power supplypositive electrode
With ignition switch ON {ll): Pulsing signal
818SC LSMStart clutch control linear
solenoid power supply negative
electrode
s20LGIGround
821VBUBack-up power supplyAlways battery voltage
B22Ground
825SC LSPStan clutch control linear
solenoid power supply positive
electrode
With ignition switch ON (ll): Pulsing signal
t
14-232

\a
PCM CONNECTOR D {16P)
14-233
Terminal Numbs]SignalDescriptionMeasuring Conditions/Terminal Voltage
D1VELSecondary gear shaft speed
sensor signal input
Depending on vehicle speed: Pulsing signal
When vehicle is stoPPed: APProx. 0 V
02SOL INHlnhibitor solenoid controlWith inhibitor solenoid ON: Battery voltage
With inhibitor solenoid OFF: 0 V
D3SH LSMShift control linear solenoid
power supply negative electrode
D4SH LSPShift control linear solenoid
power supply positive electrode
With ignition switch ON (ll): Pulsing signal
D5VB SOLPower supply for solenoid valvesWith ignition switch ON (ll): Baftery voltage
With ignition switch OFF:0 V
D6ATP RA,/T gear position switch E
position input
InEposition:0V
In other than B position; Approx. 10 V
D]VEL SGSecondary gear shaft sPeed
sensor ground
D8Not used
D9Not used
D10NDNDriven pulley speed sensor signal
anput
In other than E and E position: Pulsing signal
D11NDRDriven pulley speed sensor signal
input
ln other than E and E position: Pulsing signal
D12NDR SGDrive pulley speed sensor ground
D13ATP SA,/T gear position switch E
position input
InE position: 0V
In other than E position: Battery voltage
D14D INDD indicator light controlWhen ignition switch is first turned ON (ll):
Battery voltage for two seconds
In E position: Battery voltage
D15Not used
D16NDN SGDriven pulley speed sensor
grou nd

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

Symptom-to-Com ponent Chart
Electrical System -'99 - 00 Models
r: The DTc in parentheses is the code E indicator light indicates when the Data Link connector is connected to the HondaPGM Tester.
DTCTE Indicatot
LighrMILDetostion ltemPage
P1705
(5)ElinksONA,/T gear position switch (short to grouno,14-265
P1706
(6)OFFONA"/T gear position switch (open)14-26€
P1870
(30)BlinksONShift control linear solenoid14-271
P1873
(31)BlinksONPH-PL control linear solenoid14-213
P1879
t32lBlinksONStan clutch control linear solenoid
Inhibitor solenoid
14-215
P1882(33)BlinksON't 4-277
P1885
(34)BlinksONDrive pulley speed sensol't 4-279
P1886
(35)BlinksONDriven pulley speed sensor14-281
P1888
(36)BlinksONSecondary gear shaft speed sensor
Shift control system
14-283
P1890
\421BlinksON14-245
P1891
(43)BlinksONStart clutch control system14-286
14-240

Electrical Troubleshooting (,96 - 9g Modelsl
Troubleshooting Flowchart - Shift Control Linear Solenoid
Possible Cause
' Disconnected 3olenoid h.rn€isconnoctor. Short or open in 3hift controllinear solenoid wire. Faulty shift control linear sole-noidSOLENOID HARNESS8P CONNECTOR
Terminal stde of male terminals
Wire side of female terminals
8LU/YEL
NOTE: Record all freeze data before you troubleshoot.
. OBD ll Scan Toot indicates CodeP1870.. Selt-dirgnosis [d indic.tor tightindicatos Code 30.
Measure Shift Control Linoar Sole-noid Resistance at the SolenoidHarness Connector:1. Disconnect the 8p connectorfrom the solenoid harness connector.2, Measu re the resistancebetlveen the No. 3 and the No.7 terminals ofthe solenoid haFness connector.
ls the resistance 3.8 - 6.8 O?
Check Shift Controt Linear Sote-noid for a Short Circuit:1. Disconnect the A (26p) con,nector from the TCM.2. Check for continuity betweenbody ground and the A3 terminal and the A16 terminalindividually.
Repair shon in tho wire6 betweonthe A3 and A16 termin.ts lnd thobody ground.
Measure Shitt Control Line.rSolenoid Resistance:1. Connect the 8P connector tothe solenoid harness connec,tor.2, Meas u re the resistancebetween the 43 and A16 ter-
Repair loose terminal oa open inthe wires between the 43 andA16 terminal3 and the solenoidharness connector.
ls the resistance 3.8 6.8 O?
Chock for loose TCM connectorc.ll necessary, substitute a known-good TCM and recheck.
BLU/WHT
GRN/YEL
TCM CONNECTOR A I26PI
GRN/YEL
ll 12l:
IriGlx
1578910111213
172t)232526
14-250