Honda Civic Service Manual page 761

Electrical Troubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - Lock-up Control Solenoid Valve B
NOTE| Record allfreeze data before you troubleshoot.
Possibla Cause
. Oisconnected lock-uD control
solenoid velve A/B assembly
connector
. Short or open in lock-up control
solenoid valv€ B wire
. Faulty lock-up control solenoid
valve B
' Open in VB SOL wire
rcM CONNECTORS
T o p a g e 1 4 - 8 3
' OBD ll Scan Tool indic.tes Code
P1758.
. S e l f - d i a g n o s i s E
i n d i c a t o r
light blinks twice.
Chack for a Short to Power:
1. Turn the ignition switch OFF.
2. Disconnect the I (25P) and D
( 1 6 P ) c o n n e c t o r s f r o m t h e
PCM.
3. lurn the ignition switch ON (ll).
4. Measure the voltage between
the D3 and 820 ot 822 tetmi-
nals,
Repair short to power in the wire
between the D3 terminal and the
lock-up contlol solenoid valve B.
Measure Lock-up Control Sole-
noid Vdlve I R8i3tance:
1. Turn the ignition switch OFF.
2 , M e a s u r e t h e
r e s i s t a n c e
between the D3 and 820 or
822 terminals.
ls the resistance 12 - 25 O?
Measure VB SOL Voltago:
1. Turn the ignition switch ON lll).
2. Measure the voltage between
the D5 and 820 or 822 termi-
nals.
Check for blown No. 15 {7.5 Al
fus€ in the under-dash luse/reley
box. It the fuse is OK, repair open
in the wir6 between th6 DS termi
nal and the under-dash fuse/reby
oox,
ls there battery voltage?
Chock for loose te.minal fit in the
PCM connectors. It necessary,
substitute a known-good PCM
end recheck.
B t2sP)
ll D t15P)
Wire side ol female terminals
I {2sPt
ll D (16Pt
B (25P1
D t16Pt
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