engine HONDA CIVIC 2002 7.G Workshop Manual

19. Tighten the front engine mount bracket mounting
bolt.
'12 x 1.25 mm64 N.m 16.5 kgf.m,il7 lbf.ft)
20. Install the splash shield.
21. lnstallthe brake booster and EVAP line bracket
mounting bolts (A). and air cleaner housing bracket
mounting bolt (B). Tighten the air cleaner housing
bracket mounting bolt (C), and install the water
pipe mounting bolt (D).
A9.8 N.m(1,0 kqf
%,
'B
22 N.ml2.2kgl m,16 rbt.ft)
9.8Nm(1.0 kgf m.7.2 tbl{rl
22.
22Nm{2.2 kgf m, 16 lbf ft)
Installthe engine harness cover.
(cont'd)
13-11

28. Connect the transmission ground cable (A).
8 x 1.25 mm
B
22 N.m (2.2 kgf.m, 16lbf.ft)
[---.-.---e
e
6x1,0mm9.8 N.m{1.0 kgl m. 7 lbf ftl
29.
30.
8x125mm22Nm12.2 kgt m, 16 lbf ft)
lnstall the battery tray (B).
Installthe intake air duct (see step 36 on page 5-14).
Installthe air cleaner housing (see step 39 on page
5-15).
Installthe intake manifold cover (see step 41 on
page 5-15).
Install the battery. Connectthe positive (+) cable
first, then the negative (-)cable to the battery.
Reflllthe transmission fluid (see page 13-3).
Test-drive the vehicle.
Check the clutch operation.
Check the front wheel alignment (see page 18-4).
Enter the anti-theft code for the radio, then enter
the customer's radio station presets.
Do the engine control module (ECM) idle learn
procedure (see page 11-139).
32.
33.
34.
35.
36.
31.
38.
39.
13-13

Steering
Steering Wheel Rotational Play
Check
1. Turn the front wheels to the straight ahead position.
2. Measure how far you can turn the steering wheel
left and right without moving the front wheels.
. lf the play is within the limit, the gearbox and
linkage are OK.. lf the playexceedsthe limit, adjustthe rack guide
{see page '17-13). lf the play is still excessive after
rack guide adjustment, inspect the steering
linkage and gearbox {see page 17-5).
BOTATIONAL PLAY: 0 10 mm (0-0.39 in.l
+:
17-4
Power Assist Check
Start the engine, and let it idle.
Attach a commercially available spring scale to the
steering wheel. With the engine idling and the
vehicle on a clean, dry floor, pull the scale as
shown, and read it as soon as the tires begin to turn.
\
1.
3. lf the scale reads no morethan 29 N (3.0 kgf,6.6 lbf),
the power assist is OK. lf it reads more, check these
items:
. Front tire pressure. Steering linkage (see page 17-5). Rack gulde adjustment (see page 17-13). EPS system (see page 17-18)

Steering
Steering Wheel Installation
1. Before installing the steering wheel, make sure the
front wheels are aligned straight ahead, then center
the cable reel (A). Do this by first rotating the cable
reel clockwise until it stops. Then rotate it
counterclockwise about two and a half turns. The
arrow mark (B) on the cable reel label should point
straight up.
Position the two tabs (A) of the turn signal
canceling sleeve (B) as shown. Installthe steering
wheel onto the steering column shaft, making sure
the steerlng wheel hub (C) engages the pins (D) of
the cable reel and tabs of the canceling sleeve. Do
not tap on the steering wheel or steering column
shaft when installing the steering wheel.
17-8
3. Install the steering wheel nut (A), and tighten it to
the specified torgue.
A_B39 N.m (4.0 kgf m.29lbt ftl
Connect the cruise control set/resume switch
connector (B). fvlake sure the wire harness is routed
and fastened properly.
Install the driver's airbag, and confirm that the
system is operating properly {see page 23-113).
Check the horn, turn signal canceling and cruise
control switches for proper operation.
Reconnect the battery and do the following:. Do the engine control module (ECM) idle learn
procedure (see page 1l-139),. Power window control unit resetting procedure
\see page 22-1281.. Enter the anti-theft cord for the radio, then enter
the custmer's radio station presets.. Set the clock.
{
7.
lr,',,t
;. _,:!
'' '1i::..'.' l

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){

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

EPS Components
General Troubleshooting Information (cont'dl
5. The blinking frequency indicates the DTC. DTCS are
indicated by a series of long and short blinks. One
long blink equals 10 short blinks. Add the long and
short blinks together to determine the DTC. After
determining the DTC, refer to the DTC
Troubleshooting Index.
The system will not indicate the DTC unless these
conditions are met:. Set the front wheels in the straight ahead drivingposition.. The ignition switch is turned ON (ll).. The engine is stopped.. The SCS circuit is shorted to body ground before
the ignition switch is turned ON (ll).
Example of DTC 23
Long blinks Short blinks(two times) (three timesl
6.
7.
Turn the ignition switch OFF.
Disconnect the Honda PGM Tester from the DLC.
17-20
How to Clear EPS DTCs
Honda PGM Tesler Method:
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.
Turn the ignition switch ON (ll), and clear the
DTC{s) by following the screen prompts on the
PGM Tester.
NOTE: See the Honda PGM Tester user's manual
for specific instructions.

EPS Components
DTC Troubleshooting Index
DTCDetection ltemNote
DTC; 12A problem with voltage for torque sensor T/SlG(see page 17-28)
DTC: 16A problem with average of voltage for torque sensor VT3 and VT6(see page 17-29)
DTC: 17A problem with the voltage for torque sensor 12 V power source Vcc 1(see page 17-31)
DTC: 18A problem with the voltage for torque sensor 5 V power source Vcc 2(see page 17-31)
DfC:22A problem with the average for vehicle speed and engine speed(see page 17-33)
Excessive change of the vehicle speed sensor signal{see page 17-33)
DTC: 23A problem with the engine speed signal circuit(see page 17-33)
DTC: 37A problem with the circuit for input motor voltage in the EPS control unit(see page 17-35)
DTC: 41A problem with the motor voltage(see page 17 36)
DfC: 42A problem with the motor driven current (open circuit or short to grounol(see page '17-38)
DTC: 43A problem with the motor driven current (short to power)(see page 17-41)
DTC: 45A problem with the motor driven current (open circuit or short to grou nol(see page 17-38)
DfC: 47A problem with the motor relav in the EPS control unit{see page 17-42)
DTC: 50A problem with the CPU in the EPS control unit(see page 17-43)
DTC: 51A problem with EEPROM in the EPS control unlt(see page 17-43)
DTC: 62Fail-safe relay stuck ON(see page 17-44)
DTC: 64A problem with low battery voltage
Fail-safe relay contact failure
(see page 17-44)
(see page 17-44)
DTC: 66A problem with the motor driven voltage{see page 17 45)
DTC: 67A problem with the torque sensor l/F circuit(see page 17'45)
DTC: 68A problem with the interlock circuit (torque){see page 17-45)
DTC: 69A problem with the interlock circuit (current)(see page 17-46)
17-22

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

EPS Components
DTC Troubleshooting
DTC 12: Torque Sensor T/SIG
1. Clear the DTC.
2. Stan the engine.
3. Wait at least 10 seconds.
Does the EPS indicatot 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 DTC12 indicated?
YES Go to slep 5.
NO-Perform the appropriate troubleshooting for
the code indicated. t
Make sure the ignition switch is OFF, then
disconnect EPS control unit connector C (20P) and
the torque sensor 6P connector.
Check for continuity between EPS control unit
connector C (20P)terminal No. 15 and body ground.
EPS CONTROL UNIT CONNECTOR C {2OP)
Wire side of female terminals
ls there continuity?
YES- Repair short to body ground in the wire
between the torque sensor and EPS control unit.l
NO Go to step 7.
5.
17-28
1.
8.
Turn the ignition switch ON (ll).
Measure the voltage between EPS control unit
connector C (20P)terminal No. 15 and body ground.
EPS CONTROL UNIT CONNECTOR C (2OP)
2356180
T/SIG{YEL/BLK)
Wire side ot lemale terminals
I s there battery v oltage?
YES-Repair short to power in the + circuit wire
between the torque sensor and EPS control unit.l
NO Go to step 9.
Turn the ignition switch OFF.
Check for continuity between EPS control unit
connector C (20P) terminal No. 15 and the torque
sensor 6P connector terminal No. 4.
EPS CONTROL UNIT CONNECTOR C (2OPI
\9.
10.
T/SIG(YEL/BLK)Wire side of female terminals
TOROUE SENSOR6P CONNECTOR
T/SIG(YEL/BLK)
ls there continuity?
YES Go to step 1'1,
NO Repair open in the wire between the torque
sensor and the EPS control unit.I
Wire side ot female terminals