2000 HONDA CIVIC Ignition

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

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - lq Indicator Light On Constantly
TCM CONNECTOR A {26PI
Wire side of female terminals
YEL
The E indic.tor light is on con-stantly {not blinking} whoneverthe ignilion switch is ON llll.
Measure D INO Voltage:1. Turn the ignition switch OFF.2. Disconnect the A (26P) con'nector from the TCM.3. Turn the ignition switch ON (ll).4, Measure the voltage betweenthe A20 terminal and bodyground,
Repeir 3hort to power in thc wirebetween tho A20 terminal andihe gauge ass€mbly.
Measure ATP DVohage:1. Turn the ignition switch OFF.2. Connect the A (26P) connec-tor to the TCM.3. Turn the ignition switch ON (ll).4. Shift to any position other thanE,5. Measure the voltage betweenthe A9 terminal and bodygrou nd.
Check tor a short to ground onthe wire. ll wire is OK, .epl.cethe A/T gear position indic.tor.
2347810ll1213
1a15161720232526
GRN/BLK
123a5789101t1213
1at5161720a2526
14-264
-

Electrical Troubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - A/T Gear Position Switch (Short)
NOTE: Record all freeze data before you troubleshoot.
Po3sible Cause
. Short in A/T gear po3ition 3witch
. F.ulty A/T ge6r Position switch
NOTE: Code P1705(5) is caused when
the PCM received two gear Positioninputs at the same time.
PCM CONNECTORS
LGl (BRN/8LKI LG2 (BRN/8LKI
Wire side of female terminals
(cont'd)
14-265
B t25Pt llO(16P1
. oBD ll scln lool indicats code
P't705.. Self-diagnosb E indicator light
blinks fivetim€s.
Obseive tho A/T Gear Polition
lndicetor:1. Turn the ignition switch ON (ll).
2. Observe the A,/T gear positaon
indicator, and shift oach Posi-tion separately.
Tho ry3t6m is OK at this tims.
Check th€ wiro hsrno!! tor
damage.
Does any indicator stay on
when the shift lever is not an
that position?
M.Furo ATP R Vohtge:1. Shift to all positions other than
E.2. Measure the voltage between
the D6 and 820 or 822 termi'
nals,
Chock for lhort in tho wit€
betwe€n the D6 telminal and thg
A/T ge.r position 3witch or A/T
gear po3ition indicttoi, !nd
chcck for open in the witgs
botwo€n the 820 lnd 822 tetmi_n.ls and body g.ound (G1011. F
wiro3 ere OK, check tor loo3o ter'
minal fit in the PrCM connoctors.ll n6c€3sary, 3ubstitute a known-good PCM and rochock.
ls there approx. 10 V?
To page 14 266

Electrical Troubleshooting {'99 - 00 Models)
Troubfeshooting Flowchaft- AIT Gear Position Switch (Openl
NOTE: Record allfreeze data before vou troubleshoot.
Po$ible Cau3e
. Oilconnected A/T goar positionswitch. Op€n in A/T go.r po.ition switchwi?o. Faulty A/T gear polition switch
PCM @NNECTORS
(BRN/BI.XI LG2IBRN/BLKI
wire side of fomale terminals
I-G1 (BRN/BLKILG2 {BRN/BLK)
B {25P) I tO (16P1
ATP NP ILT GRNI
A t:r2Pt Il s tzspt
. OBD ll Scan Tool indicstE CodeP1706.. Selt-diagnGi! E indicato. lightblinks six tim€a.
Test the IVT gear position switch(see section 23).
Measu.e ATP R Voltage:1. Turn the ignition switch ON (ll).2. Shift to E position.
3. Measure the voltage betweenthe D6 and 820 or 822 termi-nals,
Ropair opcn in the wi.. hr.raGnth6 DO torminrl lnd the A/t g..rposition awitch.
Measure ATP NP Vohage:'1. Shift to E or N position.2. Measure the voltage betweenthe A9 and 820 ot 822 letmi-nals,
Ropair op6n in th€ wiro b€{woanthe Ag t.rminal and the A/T go..position .witch.
To page 14 269
14-264

Electrical Troubleshooting {'99 - 00 Models}
Troubleshooting Flowchart - A/T Gear Position Switch (Openl (cont'dl
Bepair opon in the wiro bgtw€enlho A22 torminal and the A/Tgoar poihion lwitch.
PCM CONNECTORS
B (25P1
LGT (BFN/ALK}
PCM CONNECTOR B I25PI
12.15 / 7I
9't0l1Br1/l/41it8
ll lLG2
o) (o)
IBRN/BLKI
Wire side of female terminals
From page 14-8-269
Msasuro ATP L Voftage:1. Shiftto E position.
2. Measure the voltage betweenthe A22 and 820 or 822 termi-nals,
Check LG Wiro for .n Open Cir-cuit:'] Turn the ignition switch OFF.2. Check lor continuity betweenthe 820 t€rminal and bodyground, and between the 822terminal and body ground.
Ropai' op.n in the wir€a botw.€nthe 820 rnd 822 toJminals .ndbody ground, and .opsi. poolground (Gl01l.
Check tor loose te.minal frt in th6PCM conn€ctors, lf n€cessary, sub-stitut€ a knowo-good PCM anda6check,
Wire side of female terminals
14-270

JTroubleshooting Flowchart - Shift Control Linear Solenoid
NOTE: Record all freeze data before you troubleshoot
Possiblc Cause
. Disconn€cted solenoid harnos3
connectol. Short or oDen in shilt controllinetr solonoid wiro. Faulty shift control linear sole_
noid. Op€n in VB SOL wite. ODen in PG'l and PG2 wires or
poor ground {G10'l)
f,
wire side ot female terminals
LG1 IBRN/BLKILG2IBRN/BLK)
{cont'd)
14-271
PCM CONNECTORS
B(25P) - Dll6P)
.OBD ll Scan Tool indicatos
Code P1870.. Solf-diagnosis E indic.lor light
indic.t€s Code 30.
M6a3ure VB SOL voltage:1. Turn the ignition switch OFF.
2. Disconnect the B 125P) and D(16P) connectors from the
PCM,3. Turn the ignition switch ON (ll).
4. Measure the voltage between
the D5 and 820 or 822 terminals.
Repair open or shod in the wire
between the D5 terminal and the
under-dash tuso/telay box.
Check the Ground Circuitl1. Turn the ignition switch OFF.2. Check lor continuity between
the terminafs 82 and 822 and
between terminals 810 and
820.
Repair open in the wi.e betwoen
the termin.ls 82, B10, B20, and
822 and G101. Repair Poolground (G101).
LG1 IBRN/BLKI
PCM CONNECTOR B PsPI
PG,I IBLK)
10 page 14-272
a

Troubleshooting Flowchart - PH-PL Control Linear Solenoid
NOTE: Record all freeze data before you troubleshoot.
Possibls c.use
. Oisconn6dod solenoid harness
conn6ctol. Short or ooen in PH-PL controllinear solenoid wire. F.ulty PH-PL cont.ol linear sole-noid. ODen in VB SOL wire. Op€n in PGl and PG2 wires orpoor ground lG101l
PCM CONNECTORS
Wire side of female terminals
LGT IBRN/BLKILG2 IBRN/BLK)
(cont'd)
B (25P1 D {16P}
. OBD ll Scan Tool indicates
Codo P1873.. sslt-disgnosis E indicltor lightindicates Code 31.
Mo.surevB SOL Vohagg:1. Turn the ignition switch OFF.
2. Disconnect the 8 (25P) and D(16P) connectors from the
PCM,3. Turn tho ignition switch ON (ll),
4. Measure the voltage between
the D5 and 820 or 822 termi-nals,
Ropair open or shod in the wiJe
bstwaon tho D5 terminal and the
under-dalh tuso/relay box.
Check the Ground Circuh:1. Turn the ignition switch OFF2. Check tor continuity betweenthe terminals 82 and 822 andbetween terminals 810 and820.
Fepair open in tho wiro b€tw€entho torminds 82, 810, 820, and
822 and G101. Repair Poorground (G1011.
(BRN/BLX)
Fo page 14-274
PCM CONNECTOR B (25P|
14-273

Troubleshooting Flowchart - Start
NOTE: Record all freeze data before you troubleshoot'
Clutch Control Linear Solenoid
PCM CONNECTORS
Wire side of lemale terminals
LGl (BRN/BLKI
(cont'd)
14-215
Po$ible Cause
. Disconnected solenoid harness
connedol. Short or open in sta.t clutch
control linear solenoid wiro. Faulty 3tart clutch conttol lin€ar
solenoid' Ooen in VB SOL wire. Open in PGI and PG2 wires or
poor ground {G101)
B l25P) -- o l16P)
'OBD ll Scan Tool indicates
Code Pl879.. self-diagnosis E indicstor light
indicates Code 32.
Measure VB SOL Voltag6:
1. Turn the ignition switch OFF
2. Disconnect the B {25P) and D(16P) connectors {rom the
PCM.3. Turn the ignition switch ON (ll).
4. Measure the voltage between
the D5 and 820 or 822 termi-
nals,
Reprir opon or short in the wire
between the D5 terminal and the
undei-d.sh luse/relaY box.ls there battery voltage?
Check the Ground Ciicuit:'1. Turn the ignition switch OFF.
2. Check for continuity between
the terminafs 82 and 922 and
between terminals 810 and
820.
Rep.ir open in the wire betwesn
the terminab 82, 810, 820. tnd
822 and G101. RePair Poorground lG101l.
ls there continuity?
LGl IBRN/BLK)
To page 14-276
PCM CONNECTOR B {25PI