steering wheel HONDA CIVIC 2002 7.G User Guide

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Steering Column Removal and Installation
SRS components are located in this area. Review the SRS component locations (see page 23-13) and precautions andprocedures (see page 23-14) in the SRS section before performing repairs or service.
Removal
1, Record the radio station presets, and disconnect the battery.
2. Removethedriver'sairbagassembly(seepage23-113) and the steering wheel (see page 17-6).
3. Removethe driver's dashboard lowercover(see page 20-59) and undercover(see page 20-60).
4. Remove the column covers (A:
I x 1.25 mm16 N.m (1.6 kgf.m,12 lbl.fr)b
5.
6.
Disconnect the wire harness connectors from the combination switch assembly {B).
Remove the combination switch assembly from the steering column shaft by removing the screw (C) on the top of
the combination switch.
7. Disconnect the connectors from the ignition switch, and release the wire harness clips from the steering column.
8. Disconnect the steering joint (D), and remove it from the column shaft.
9. Remove the steering column {E) by removingthe attaching nuts and bolts.
(cont'd)
17-9

Steering
Steering Column Removal
lnstallation
1.
4.
Install the steering column, and make sure the
wires are not caught or pinched by any parts.
Insertthe upper end ofthe steering joint onto the
steering shaft {A) (line up the bolt hole (B) with the
flat portion (C) on the shaft).
8 x 1,25 mm28 N.m{2.9 kgf m,21 rbr.ft)
A
Slip the lower end of the steering joint onto the
pinion shaft {D) (line up the bolt hole with the
groove (E) around the shaft), and loosely lnstallthe
lower joint bolt. Be sure that the lower joint bolt is
securely in the groove in the pinion shaft.
Pull on the steering joint to make su re that the
steering joint is fully seated. Then installthe upper
joint bolt, and tighten it to the specified torque.
Tighten the lower joint bolt to the specified torque.
Finish the installation, and note these items:
. Make sure the wire harness is routed and
fastened properly.
. Make sure the connectors are properly connected.. Reinstallthe steering wheel (see page 17-8).
. Reconnect the battery.- Do the power window control unitreset
procedure {see page 22-128).- Enter the anti-theft code for the radio, then
enter the custmer's radio station presets.
- Set the clock.. Verify horn, turn signal switch, and cruise control
switch operation.. Check wheel alignment, if necessary (see page
18-4).. Do the engine control module (ECM) idle learn
procedu re {see page '11-139).
17-10
and Installation (cont'd){

Steering
Steering Lock Replacement
NOTE: Do not try to re-key a replacement steering lock.
lf necessary, re-key the other locks.
1. Remove the steering column (see page 17-9).
2. Center punch each ofthe two shear bolts (A), and
drill their heads off with a 5 mm (3i 16 in.) drill bit.
Be careful not to damage the switch body when
removing the shear bolts,
3. Remove the shear bolts from the switch body.
4. Installthe switch body without the key inserted.
5. Loosely tighten the new shear bolts.
6. Insert the ignition key, and check for proper
operation of the steering wheel lock and that the
ignition key turns freely.
:..'-":'
17-12
7. Tighten the shear bolts (A) untilthe hex heads (B)
twist off.
I
A
I

Rack Guide Adjustment
Special Tool Required
Locknut wrench, 43 mm 07MAA-S100200
1. Set the wheels in the straight ahead position.
2. Remove the heat shield (A).
3.
9.8 N.m (r.0 kgf.m,7.2lbtft)
Remove the transmission mount bracket (see step
32 on page 13-8).
Loosen the rack guide screw locknut (A)with the
special tool, then remove the rack guide screw (B).
Remove the old sealant from rack guide screw, and
apply new sealant to the middle of the threads (A).
Loosely installthe rack guide screw on the steering
gearDox.
'-.i. '' '
07MAA-S100200
6. Tighten the rack guide screw (A)ro 25 N.m (2.5
kgf.m, 18lbf.ft). then loosen it.
5" Max.
j i-rrrr-,
I 4il N.m{a.5 kgf.m,33lbt.ft)
Retighten the rack guide screw to 6 N.m (0.6 kgf m,
4 lbf.ft), then back it off to the specified angle.
Specified Return Angle: 5' Max.
Hold the rack guide screw stationary with a wrench,
and tighten the locknut by hand until it's fully
seated.
Installthe special tool on the locknut (B), and hold
the rack guide screw (A) stationary with a wrench,
Tighten the locknut an additional 30" with the
specialtool.
Reinstall the transmission mount bracket and heat
sh ie ld,
Check for unusual steering effort through the
complete turning travel.
Check the steering wheel rotation play (see page
17-4) and the power assist (see page 17-4).
11.
7.
9.
10.
12.
17-13

EPS Components
aGeneral Troubleshooting Information
EPS Indicator
Under normal conditions, the EPS indicator comes on when
the ignitlon switch is turned to the ON (ll) position, then goes
off after the engine is started. This indicates that the bulb and
its circuit are operating correctly.
lf there is any trouble in the system after the engine is started,
the EPS indicator will stay on, and the power assist is turned
off.
When EPS indicator light comes on, the control unit
memorizes the DTC. In this case, the control unit will not
activate the EPS system after the engine starts again, but it
keeps the EPS indicator on.
When DTC 12, 16, 17, 18 or 67 is stored in the control unit, the
EPS indicator will stay on until the DTC is erased. When a
problem is detected and the EPS indicator comes on, there are
cases when the indicator stays on untilthe ignition switch is
turned 0FF, and cases when the indicator goes off
automatically when the system returns to normal. Even though
the system is operating normally, the EPS indicator will come
on under the following conditions:
Condition '1:
. The vehicle was traveling at least 12.4 mph (20 km/h), then. A rapid change in vehicle speed was detected, then. The vehicle (or the vehicle speed sensor signal) stopped for
at least 5 seconds. The engine speed was still 'l,640rpmorhigherforatleastS
seconds
Condition 2:
After the vehicle (or the vehicle speed sensor signal) has
stopped for at least 10 seconds, yet the engine speed was still
1,640 rpm or higherfor at least 20 seconds.
Condition 3:
When the engine speed is 280 rpm or less, and the vehicle is traveling at
a speed of 6,2 mph (10 km/h) or more for 3 seconds.
To determine the actual cause ofthe problem, question the
customer about the conditions during which the problem
occured, taking the above conditions into consideration.
Diagnostic Trouble Code (DTCI
. lf the CPU cannot be activated, or itfails,the EPS indicator
comes on, but the DTC is not memorized.. The memory can hold any number of DTCS. However, when
the same DTC is detected more than once, the most recent
DTC is written over the prior DTC, therefore only one
occurrence is memorized.. The DTCS are indicated repeatedly untilthe ignition switch is
turned OFF.. lf the DTC is not memorized,the EPS indicator blinks.
. The DTCS are memorized in the EEPRO| (non-volatile
memory) therefore the memorized DTCS cannot be erased
by disconnecting the battery. Perform the specified
procedures to clear DTCS.
Self-diagnosis
Self-diagnosis can be classified into two categories:.Initial diagnosis: performed right after the engine
starts and until the EPS indicator goes off.. Regular diagnosis: performed right after the initial
diagnosis until the ignition switch is turned OFF.
The EPS control unit performs the following functions
when a problem is detected by self-diagnosis;
'1. Turns on the EPS indicator.
2. Memorizes the DTC.
3. Stops power assist and manual steering operation
begrns.
NOTE:. When DTC 23 (a problem with the circuit for
engine speed signal) is detected, the power
assist will return to normal when the vehicle
speed is 0.62 mph (1 km/h) or above.. Fot DfCs 22,23, 64, or 66 the EPS indicator goes
off automatically when the system relurns to
normal. For all other codes, the EPS indicator
goes off when the system is OK after the ignition
switch is turned from OFF to ON (ll).
Restriction on Power Assist Operation
Repeated extreme steering force. such as turning the
steering wheel continuously back-and-forth with the
vehicle stopped, causes an increase of power
consumption in the EPS motor. The increase of electric
current causes the motor to heat up. Because this heat
adversely affects the system, the control unit monitors
the electric current of the motor.
When the control unit detects heat build-up in the motor,
it reduces the electric current to the motor gradually to
protect the system, and it restricts the power assist
operation. The EPS indicator does not come on during
this function.
When steering torque is not applied to the steering
wheel, or when the ignition is turned off, and the motor
cools, the control unit will restore the power assist
gradually until it's fully restored (after approximately 15
minutes maximum).
17-18

Service Check Signal Circuit Method:
NOTE: Use this procedure when the PGM Tester
software does not match the yearlmodel vehicle you
are working on.
1. With the ignition switch OFF, connect the Honda
PGM Tester (A) to the 16P data link connector {DLC)(B) located under the dash on the driver's side of
the vehicle.
With the vehicle on the ground, set the front wheels
in the straight ahead driving position.
Short the SCS circuit to body ground using the
Honda PGM Tester.
Turn the ignition switch ON (ll). The EPS indicator
comes on for about 6 seconds. Within 4 seconds of
turning the switch ON, while the EPS indicator is on,
turn the steering wheel 45 degrees to the left from
the straight ahead driving position, and hold the
steering wheel in that position until the EPS
indicator goes off.
Within 4 seconds afterthe EPS indicator goes off,
return the steering wheel to the straight ahead
driving position and release the steering wheel.
The EPS indicator comes on again 4 seconds after
releasing the steering wheel,
Within 4 seconds after the EPS indicator comes on,
turn the steering wheel 45 degrees to the left again
and hold it in that position.
The EPS indicator goes off after 4 seconds.
4.
1.Within 4 seconds after the EPS indicator goes off,
return the steering wheel to the straight ahead
driving position again and release the steering
wheel. The EPS indicator blinks twice 4 seconds
after releasing the steering wheel, indicating that
the DTC was erased.
NOTE: If the EPS indicator does not blink twice, an
error was made in the procedure and the DTC was
not erased. Turn the ignition switch OFF, and
repeat the operation from step 3.
Turn the ignition switch OFF afterthe EPS indicator
blinks twice.
9. Disconnect the Honda PGM Tester from the DLC.
10. Perform the DTC code output operation, and be
sure that the code has been erased.
17-21

EPS Gontrol Unit Inputs and Outputs at Connestor C (20P1
EPS CONTROL UNIT CONNECTOR C (2OP)
Wire side of female terminals
TerminalnumbelWire colorTerminal sign{Terminel name}DescriplionMeasuremeniTerminalsConditions{lqnition switch ON {lll)Voltage
2PNKT/S GND(Torque sensor qround)Ground for the torque
ORNvccl(Voltaqe common 1Power source fortorque3-Groundtartthe enqrneBa$erv voltaqeOV
5YEUBEDVT6(Voltaqe torque 6)Detects torque sensorstonal5 GroundStartthe engine andturn the steerino wheelAbout
YEUBLU(Warninq lamp)Drives the EPS indicatorlidhr6 GroundEPS ONtnotcatol uTl-OVBanerv voltaqe
7BLUAVHTVSP(Vehicle speed pulseiDetects the vehicle speedinput signal for the speedsensor or the ECM (4 pulse/
Raise the vehicle off theground and spin theAlternatingvoltage aboutOV 5V OV-5V
BRNSCS{Servjco check siqnal)Detects service check8-GroundSCS not groundedBattery voltage
10YELIG1llqnition 1Power source for activating10-Groundon switch ON (ll)Batterv voltaqeon switch OFF11G RN//ELvcc2(Voltaqe common 2)Drives the torque sensor1'l-Groundtan the enoineAbout5Von switch OFF8LU/ORNVT3(Voltaoe toroue 3)Detects torque sensor13-GroundStartthe engine andtrrrn the steerino wheelAbout5-0 v
YEUBLKT/SIG(Torque sensor F/SDetects torque sensorsrgnal15-GroundStartthe engineMomentarily 5 V
1'lLT GRN/BI KPSWiPower steerino switch)Provides power steeringswitch sionall7-GroundStartthe engine andnrrn the steerino wheel0-12V
19BLUNEPDetects the engine pulse19-GroundStartthe engine, and let;t idte
20GRYDIAG-HCommunications withHonda PGNI Tester20-GroundPGM Tester not5V
17-25

'14. Check for continultv between EPS control unit
connector C (20P)terminal No. 19 and ECM
connector E (31P) terminal No. 26.
ECM CONNECTOR E {31PI
ls thete continuity?
YES-Go to step 15.
NO-Repair open in the wire between the EPS
control unit and ECM.I
Disconnect the gauge assembly 22P connector.
Check for continuity between EPS control unit
connector C (20P)terminal No. 19 and body ground,
EPS CONTROL UNIT CONNECTOR C (2OP}
Wire side of female terminals
ls there continuity?
YES Repair shortto body ground in the wire
between the EPS control unit, the test tachometer
connector, the gauge assembly, and the ECM.I
NO Check for loose ECM control unit connectors.
lf necessary, substitute a known-good ECM control
unit and recheck.I
15.
DTC 37: EPS Control Unit Internal Circuit(lnput Circuit For Motor Voltage)
1. Clear the DTC.
2. Start the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait 10 seconds or more.
Does the EPS indicator come on?
YES Go to step 4.
NO Check for loose wires or poor connections. lf
the connections are good, the system is OK at this
trme.l
4. Stop the engine, and verify the DTC.
ls DTC 37 indicated?
Y€S Check for loose EPS control unit conneclors.
lf necessary, substitute a known-good EPS control
unit and recheck.l
NO Perform the appropriate troubleshooting for
the code indicated.l
17-35

EPS Components
DTC Troubleshooting (cont'dl
DTC 41: Voltage For Motor
1. Clear the DTC.
2. Start the engine.
3. Turn the steering wheel from lock-to-lock several
times, and wait 10 seconds or more,
Does the EPS indicator come on?
YES-Go to step 4.
NO Check for loose wires or poor connections. lf
the connections are good, the system is OK at this
time.l
4. Stop the engine, and verify the DTC.
ls DTC 41 indicated?
YES Go to step 5.
NO Perform the appropriate troubleshooting for
the code indicated.l
5. Make sure the ignition switch is OFF, then
disconnect EPS control unit connector B (2P) and
the motor 2P conneclor.
6. Check for continuity between EPS control unit
connector B (2P) terminal No. 1 and body ground.
EPS CONTROL UNIT CONNECTOR B {2P}
M1 (RED} HF---t||
Itr(f))
T,L
Wire side of female terminals
ls there continuity?
YES Repair short to body ground in the RED wire
between the EPS control unit and the motor. !
NO-Go to step 7.
17-36
7. Check for continuity between EPS control unit
connector B (2P)terminal No. 2 and body ground.
EPS CONTROL UNIT CONNECTOR B I2P)
TitM2 {GRN) FJ
-r
o)
TI
Wire side of female terminals
ls there continuity?
YES-Repair short to body ground in the GRN wire
between the EPS control unit and the motor,l
NO Go to step 8.
Check for continuity between EPS control unit
connector B (2P)terminal No. 1 and No. 2.
EPS CONTROL UNIT CONNECTOR B {2P)
Wire side of female terminals
ls there continuity?
YES Repair short between the RED and GRN
wires in the motor circuit between the EPS control
unit and the motor.l
NO Go to step 9.
M2 (GRNI
.l
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9. Turn the ignition switch ON (ll), and measure the
voltage between EPS control unit connector B (2P)
terminal No. 1 and body ground
EPS CONTROL UNIT CONNECTOR B (2P)
M1 IREDI Hr-_ -1 ||
tr,<.)\uL,/Y
I
Wire side oI female terminals
Is there battety voltage?
YES Repair short to power in the + circuit wire
between the EPS control unit and the motor.I
NO-Go to step 10.
Measure the voltage between EPS control unit
connector B (2P)terminal No.2 and body ground.
EPS CONTROL UNIT CONNECTOR B (2P)
10.
raz rcnrrrr l{l-t . I
I(v)
YI
Wire side of female terminals
ls there battery voltage?
YES-Repair shortto power in the - circuitwire
between the EPS control unit and the motor.!
NO Go to step 11.
11.Turn the ignition switch is OFF.
Substitute a known-good EPS control unit, and
connect all the disconnected connectors.
Start the engine, and turn the steering wheel from
lock to lock several times.
Does the EPS indicator come on?
YES-Go to step 14.
NO-Check for loose or poor connections atthe
EPS control unit and the motor connections. lfthe
connections are good, replace the EPS control unit
and recheck.l
Stop the engine, and verity the DTC.
ls DTC 41 ind icated?
YES Replace the steering gearbox motor and
recheck.l
NO Perform the appropriate troubleshooting for
the code indicated.l
13.
14.
17-37