1994 HONDA INTEGRA ignition

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

Descraption
The car is squippod with thq following dovlc6. to prevont inadvoft.nt shitting:
a A/T selector with shift locka Key cylinder with interlocked ignition key
Shift Lock Syst6m;
The shitt lock system prevents the shift lever from moving to @ or lDil from the @ position unless the brake pedalis depressed and the accelerator is in its rest oosition.
NOTE:
a The shift lever cannot be shifted when the brake pedsl and the accelerator are depressed on at the same time.a In case ot system malfunction, the shift lever can be released by pushing a key into the release slot near the shift lever.
Koy Ints.lock Systsm:
The ignition key cannot be removed from the ignition switch unless the shil-t lever is in the E positionWhen the shift lever is in any position other than @, a sol€noid is activated, making it impossible for the key to be re-moved until the shift lever is moved to the llj position.
SOLEI{OIDON: LOCKOFF: UNLOCK
Th€ shift lever is in the E position.
KEY CYLINDER
The shift lever is in any position except pl .
II{TERLOCK LEVERswtTcH
23-139

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

Integrated Control Unit
Input Test (cont'd)
Engine Oil Pressure Indicator Flashal System:
Wire/
rWith combined washeFwipot operation
Test: Desired resultPossiblo c€use if r6rult is not obtainodNo. TelminalTsst condition
M
1Engine runningCheck for voltage to ground:
There should be battery voltage
. Faulty charging system. An oDen in the wire
YEL/RED
lgnition switch oFFCheck for continuity to gtound:
There should be continuitv.
. Faulty engine oil ptessure switch
. An oDen in the wire
lgnition switch ON (ll)Check indicator light. lf the light
does not come on, Sttach the
YEL/RED terminal to ground:
The light should come on as the
ignition switch is turned ON.
. Blown bulb. An open in the ware
Start the engine.Check for voltage to ground:
There should be battery voltage
Insufficient oil
lmproper lubrication
Faulty engine oil pressure switch
Key-in/Seat Bolt Reminder Systam:
No. WilaTest condition
NOTE: Refer to page 23-125 for the seat belt switch test.
Test: Dosired lesuhPossible causo if resuh is not obtainod
23-148'
GRN/BLU'Driver's door openCheck for continuity to ground;
There should be continuitv.
. Faulty driver's door switch
. An ooen in the wire
LT GRN/
RED
Front passenger's door
switch open
NOTE: Betore testing,
remove No. 3 (7.5 A)
tuse from the under-
dash fuse/relay box.
Check tor continuity to ground:
There should be continuitv.
. Faulty lront passenger's door switch
. An ooen in the wire
LT BLU
lgnition key inserted
into the ignition switch
Check for voltage to ground:
There should be 1 V or less.
Faulty ignition key switch
Poor ground (G201 , G401)
An ooen in the wite
RED/BLU
lgnition switch ON (ll)
and driver's seat belt
unbuckled
Check lor voltage to ground:
There should be 1 V or less.
Faulty seat belt switch
Poor ground {G551)
An open in the wire
;.rqFft,

Key-in Reminder System
lgnition Key Switch Test
NOTE: Refer to page 23-145fot a diagram of the key-
in leminder circuit, and to page 23-148 Jor the input test
ol the beeper circuit.
When the ignition key is not removed, the key-in reminder
in the integrated control unit senses ground through the
closed ignition key switch. When you open the driver's
door, the beeper circuit senses ground through the closed
door switch, With ground at the "LT BLU" and "GRN/
BLU" terminals, the beeper sounds.
1 . Remove the dashboard lower cover and knee bolster
(see page 23-70).
2. Disconnect the 7-P connector from the main wire
harness.
Check for continuity between the No. 2 and No. 4
terminals in each condition acco.ding to the table.
l.
Door Switch Test
Open the door.
Remove the screw, then pull out the door switch.
Disconnect the 1-P connector from the switch.
4. Check lor continuity between the positive terminal
and the base plate (ground) in each switch position
according to the table.
BASE PLATE
Position
TerminalPOSITIVEBASE PLATE
PUSHED {door closedl
RELEASED ldoor o!en)oo
Terminal
Condition
4
KEY INSERTED--o
KEY REMOVED
23-150

Engine Oil Pressure
Indicator System
Description
NOTE: Reter to page 23-144 tor the circuit diagram otthe engine oil pressure indicator flasher, snd to page
23-148 lor the input test of the flasher circuit.
The low engine oil pressure indicator tight works in twoways. lt will flash continuously following a momentaryloss of oil pressure, or it will go on and stay on with acomplete loss of oil pressure.
When the engine first starts, before oil Dressure risesabove 29.4 kP8 10.3 kgf/cmr, 4.3 psi), current flowsthrough the low engine oil pressure indicator light andthe oil pressure switch to ground. This tests the circuit.
Wilh the engine running, voltage is applied ro the ftash-er circuit of the integrated control unit. With normal oilpressure, the oil pressure switch is open and the low en-gine oil pressure indicator light does not operate. lf theoil pressure switch closes momentarily (more than O.5secondsl, but then opens again, terminal "yEL/RED,'will
sense ground through the switch. The integrated con-trol unit willthen provide and remove ground for th€ lowengine oil pressure indicator light through terminal"YEL/RED". The light will flash on and olf until the igni-tion switch is turned to "OFF".
lf engine oil pressure falls below 29.4 kPa (O.3 kgJ/cmr,4.3 psi) and does not increase, the oil pressure switchwillstsy closed. The low engine oilpressure indicator lightwill go on and stav on.
NOTE; Refer to page 23-122lot the engine oil pressure
switch test.
Lights-on Reminder
System
Description
Chime Test
Remove the dashboard lower cover and knee bolster
{see page 23-70).
Disconnect the 2-P connector t.om the dashboardwire hamess.
Test the chime by connecting battery power to the"A" te.minal and ground to the "B" terminal, andcycling the power on-off repestedly.
lf the chime fails to sound every time power is cy-cled, reDlace it.
NOTE: Refer to page 23-145 tor a diagram of the lights-
on reminder circuit, and to page 23-149 for the input
tests of the circuit.
When the ignition key is turned to OFF 8nd removed. withthe lights on, voltage is apptied to the reminder circuitin the integrat€d control unit. When you open the driver,sdoor, the circuit senses ground through the closed doorswitch.
With voltage at the "H" terminal, ground at the"GRN/BLU2" terminal and no voltage at the ,,F,' termi-nal, the chime sounds to remind the driver to turn oJf thelights.
CHIME
23-151

T€st conditionTest: Desirad losultPossibla cause if rosult is not obtainad
1BLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
. Poor ground {G201, G401). An open in the wire
WHT/YEL
Under all conditionsCheck Jor voltage to ground:
There should be battery voltage.
. Blown No. 1 7 { 10 A} luse in the
under-dash tuse/relay box. An ooen in the wiae
YEL/BLK
lgnition switch ON (ll)Check tor voltage to ground:
There should be battery voltage.
Blown No. 16 (7.5 A) tuse in the
under-dash fuse/relay box
Faulty ignition switch
An open in the wire
4RED/WHT
Combination light
switch in "O" positionCheck for voltage to ground:
The.e should be battery voltage.
Blown No. 40 {5O A) fuse in the
under-hood fuse/relay box
Faulty combination light switch
An ooen in the wire
5WHT/REO
Combination light
switch is OFF; connect
a iumper wire between
the YEL/BLK and
WHT/RED terminals,
then turn th6 ignition
switch ON.
Left and right headlight (high
beaml should be on but dim, and
high beam indicator light should
come on.
Poor ground (G201 . G401 . G301)
Blown bulbs
Faulty daytime running lights
reststor
An open in the wire
ttGRN/RED
lgnition switch ON (ll),
brake fluid res€rvoil
full, and parking brake
lever down
Connect to ground: The brake
system light should come on.
Blown No. 15 (1O A) tuse in the
under-hood fuse/relay box
Blown brake system light
An open in the wire
RED/GRNParking brake lever upCheck for continuity to ground:
The.e should be continuitv.
. Faulty brake lever switch. An open in the wire
23-157

Back-up Lights
Manual Transmigsion:
NOTE: Check the No. 1 5 { 1 O A) fuse in the under-dash
fuse/relay box befote testing.
'1. Test the back-up light switch by placing the shift
lever in reverse and turning the ignition switch to ON
(

).
2. It the back-up lights do not go on, check the back-
up light bulbs in the taillight assembly.
3. lf the tuse and bulbs are OK. disconnect the connec-
tor from the back-up light switch.
terminal sade
This washer must
always be replacedtor the switch tolunction properlY
and to ptevent ollteaKs.
4. With the shift lever in reverse. check Jor continuity
between the A and B terminals with the switch in-
stalled.
There should be continuity.
a lf there is no continuity, replace the switch {see
section 13).
a lf there is continuity, but the back-up lights do not
go on, check for:- Poor ground (G5O3)
- An open in the wire
23-180
Automatic Transmission:
NOTE: Check the No. l 5 ( 1 O A) fuse in the under-dash
fuse/relay box belore testing.
1. Test the back-up light switch by shitting the shift
lever to l3l and turning the ignition switch ON (ll).
2. lf the back-up lights do not go on, check the back-
up light bulbs in the taillight assembly.
3. lf the tuse and bulbs are OK, disconnect the 14-P
connector from the A/T gear position switch (back-
up light switch).
Move the lever back and torth at the LBI position
without touching the push button, and check tor
continuitv between th€ C and D terminals. There
should be continuitY within the range of free plsy of
the shift lever.
a lf there is no continuity within the range oJ J.ee
play, adjust the position ot the A/T gear position
switch lsee section 141.
a lt there is continuity, but the back-up lights do not
go on,check {or:- Poor ground {G503)- An oDen in the wire
4.