1994 HONDA INTEGRA Ecm

ul{o€R - DAstlGIINONSWITCH FUSC/RELAYBOX
Circuit Diagram (Without A/Cl
UI{OER - HOOD FUS€/REI.AY BOX
6r F'rrr^'l.{ ots YEt {<\o*r
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ECM
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Fan Controls
23-110
No.4l {lmA, No.39l50Al
FIIF.-

CONNECTOR "D": Visw from wire side ot femals
tetminals
No.WilaTest condition
CONNECTOR "8": View from wire sid6 of fem.l6
i6lminals
No.WileTost condition
CONNECTOR "C": Vi3w lrom wire sido of temale
t6rminals
Test condition
Test: D€sirod rasultPossible cause if result is not obtainod
Tost: D€sir6d resultPossiblo cause if result is not obtained
GRNA HTGRNITELYELAA'HTGRN/BLK
Tost: Desirod r6sult Possible cause it result is not obtainedNo.
BLKUnder all conditionsCheck for continuity to ground:
There should be continuitv.
. Poor ground (G2O1, G4O1). An open in the wire
2YEL
lgnition switch ON { ll}Check for voltage to ground:
There should be battery voltage.
. Blown No. 15 (1O A) tuse in the
under-dash fuse box. An open in the wire
RED/BLK
1
RED/BLK
ano
RED
Combination light
switch ON and dash
lights brighlness control
dial on full bright
Check for voltage between
RED/BLK and RED terminals:
There should be baftery voltage.
. Faulty dash lights b.ightness control
system. An open in the wire
GRN^^/HT
Shift lever in position @NOTE: Don't push the
brake pedal.
Check for continuity to ground:
There should be continuitv.
NOTE: There should be no
continuity in any other position.
Faulty A/T gear position switch
Poor ground
An open in the wire
GRN/REDShift lever in position @
GRNShift lever in position S
GRN/BLUShitr lever in position @
GRN/YELShitt lever in position f2 ]
LT-
GRNMHTShift lever in position E
2GRN/BLK
lgnition switch ON (ll)
and shift lever in anyposition except @
Check for voltage to ground:
There should be battery voltage
for two seconds after the
ignition switch is turned ON,
and less than 1 V two seconds
later.
. Faulty t,ansmission control module(TCM)
. An open in the wire
3YEL/vVHT
lgnition switch ON (ll)
and shitt lever in anyposition except @
Check for voltage to ground:
There should be less than 'l V
tor two seconds after the
ignition switch is turned ON
and more than 5 V two
seconds later.
. Faulty transmission control modute(TCMI
. An open in the wire
4LT.
GRN/BLK
lgnition swirch ON {ll}Check for voltage to ground:
There should be mofe than 5 V
. Faulty transmission control module
ITCM) or ECM. An open in the wire
23-135

Control Unit Input Test
Oisconnect the 8-P connector from the interlock control
unit. Check for good contact between the connector and
socket terminals. lf the terminals 8re OK, make Iollow-
ing input tests at the connector. lf all input tests are OK,
but the problem remains, replace the cont.ol unit,
NOTE: lf the shilt lock solenoid clicks when the ignition
switch is ON and the brake pedal is pushed (shift tever
is in lfl position, accelerator is in rest position), the shiftlock system is electronically normal; test the A/T gear
positaon switch as described on page 23- 134.
Shift Lock Sy.tem:
No, Wlr6 Tost condition
Koy Intodock Systam:
No. WireT6st condition
Tost: Dosired resultPossiblo cause if rssuh is not obtainod
T6st: Desiled reaultPossible caure if rosult is not obtainsd
'I
lgnition switch ON (ll)
Brake pedal pushedCheck for voltage to ground:
There should be bsttery voltage
Blown No. 41 (15 A) fuse in the
under-hood fuse/relay box
Faulty transmission control module(TCM}
Faulty ECM
Faultv brake switch
Faulty throftle position lTP) sensor
An oDen in the wire
wn t/hEulgnition switch ON
brske pedal and
accelerator pushed
the same time
I [),
at
Check for voltage to ground:
There should be less than
battery voltage.
GRN^/vHT'
Shift lever in @Check lol continuity to ground:
There should be continuity.
Faulty A/T gear position switch
Poor ground {G201, G401}
An oDen in the wire
YEL/BLK
lgnition witch ON (lllCheck for voltage to ground:
There should be battery voltage
Blown No. 15 (10 A) luse in the
under-dash fuse/relay box
Faulty shift lock solenoid
An oDen in the wire
BLKUnder all conditionsCheck for continuity to ground:
There should be continuitv.
. Poor ground (G2O1, G4O1). An ooen in the wire
2
Shift lever in position
E
Check for continuity to ground;
Ther€ should be continuity.
Faulty A/T gear position swirch
Poor ground (c2O1 , G4O1)
An oDen in the wire
3WHTAYEL
lgnition switch tu.ned
to ACC (ll 8nd the keypushed in
Check for voltage to ground:
There should be battery voltage
Bfown No. 42 l2O Al fuse in the
under-hood tuse/relay box
Faulty steering lock assembly(kev interlock solonoid)
An oDen in the wire
4WHT/BLU
lgnition switch turned
to ACC (ll and the keypushed in
Check tor voltage to ground:
There should be batery voltage,
Bfown No. 42 l2O Al fuse in the
under-hood fuse/relav box
Faulty steering lock assembly(key interlock solenoid)
An oDen in the wire
23-141

tlo.WlfeTost condition
*No. 24 (15 Al: 81881 engine
No.24 l2O A): 818C1 engine
Tost: Desired rosultPossibl6 caus€ it losult is not obtained
IBLKUnder all conditionsCheck for continuity to ground:
There should be continuitv.
. Poor ground (G201, G4011. An open in the wire
2BLKryEL
lgnition switch ON (ll)Check for voltage to ground:
There should be battery voltage.
. Blown rNo. 24 fuse in the under-
dash fuse/relay box. An open in the wire
5LT GRNlgnition switch ON (ll)
and main switch ON
Check for voltage to ground:
There should be battery volt€ge.
. Faulty main switch. An open in the wire
4GRY
lgnition switch ON lll),main switch ON and
brake pedal pushed,
then released
Check for voltage to g,ound;
There should be O V with thepedal pushed and battery
voltage with the pedal released,
. Faulty brake switch. An open in the wire
GRN/wHT
Brake pedal push€d,
then r€leased
Check tof voltage to ground:
There should be battery voltage
with the pedal pushed, and O V
with the Dedal released.
Blown No. 42 l2O Al tuse in the
under-hood fuse/relay box
Faulty brake switch
An open in the wire
6RED/BLU
lgnition switch ON (ll)Connect to ground; Indicator
light in the gauge assembly
comes on.
Blown bulb
Blown No. 15 (10 A) fuse in the
under-dash fuse/relay box
Faulty dimming circuit in the gauge
assembly
An open in the wire
7LT GRN/
BLK
RESUME button
pushedCheck for voltage to ground:
There should be battery voltage.
Faulty SET/RESUME switch
Faulty cable reel
An open in the wire6LT GRN/
RED
SET button pushed
qPNK
MT/: Clurch pedal
released
A/T: Shift l€ver in [Zl,
lD:I, or lE.l
-
Check for continuity to ground:
There should be continuity.
NOTE: There should be no con-
tinuity when the clutch pedal is
depressed or when the shift
lever is in other positions.
Faulty or misadiusted clutch switch(M/T)
Faulty A/T gear position switch(A/T)
Poor ground (G201 ,G4O1)An open in the wire
10BLUStart the engine.Chsck for voltage to ground:
There should be battery voltage.
. Faulty ignition system or ECM. An open in the wire
11ORN
lgnition switch ON (ll)
and main switch ON;
rsise the front of the
car, rotat€ one wheel
slowly.
Check Jor voltage between the
ORN @ and BLK O terminals:
There should be O- about
10 V-O- about 1O V
repeatedly.
. Faulty vehicle speed sensor (VSSI. An oDen in the wire
'128RN/WHTConnect battery power
to the BRN/WHT
terminal and ground to
the BRN/BLK terminal.
Check the sound of the actuator
motor: You should hear the mo-
tor running smoothly.
. Faulty actuator. An opsn in the wire
13BRN/BLK
14BRN/RED
Connect battery power
to the BRN/RED
terminal.
Check the operation of the mag-
netic clutch: Clutch should click
and output link should be locked.
Faulty actuator
An open in the wire
Poor ground (G3O 1)
il:
23-247