2004 DAEWOO NUBIRA Service Repair Manual

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Page 1921 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 6C – 4IPOWER STEERING GEAR
DAEWOO V–121 BL4
Steering Surges or Jerks When Turning with Engine Running
ChecksAction
Check the power steering pump for insufficient pressure.Replace the power steerin

6C – 4IPOWER STEERING GEAR
DAEWOO V–121 BL4
Steering Surges or Jerks When Turning with Engine Running
ChecksAction
Check the power steering pump for insufficient pressure.Replace the power steering pump.
Check the power steering pump flow control valve for
sticking and improper operation.Replace the power steering pump.
Check the power steering pump serpentine belt for slip-
page.Tighten the power steering serpentine belt.
Check for air contamination in the power steering system.Bleed the power steering system.
Steering Vibrates During Low Speed or Static Steering
ChecksAction
Check for air contamination in the power steering system.Bleed the power steering system.
Check the power steering pump serpentine belt for loose-
ness.Tighten the power steering serpentine belt.
Excessive Wheel Kickback or Loose Steering
ChecksAction
Check for air contamination in the power steering system.Bleed the power steering system.
Check the wheel bearings for wear or damage.Replace the wheel bearings.
Check the steering gear mounting for improper installa-
tion.Tighten the steering gear mounting bracket nuts and bolts.
Check the intermediate shaft joints for improper installa-
tion.Adjust the intermediate shaft between the steering gear
and the steering column.
Replace the intermediate shaft.
Check the outer tie rods and ball joints for looseness.Tighten the tie rods and the ball joints. Replace the tie rods
and the ball joints.
Hard Steering or Lack of Assist (Especially During Parking)
ChecksAction
Adjust the intermediate shaft between the steering gear
and the steering column. Replace the coupling flange.Adjust the steering coupling flange on the steering gear
and the steering column. Replace the coupling flange as
needed.
Check the power steering pump flow control valve for
sticking and improper installation.Replace the power steering pump.
Check the power steering pump for insufficient pressure.Replace the power steering pump.
Check the power steering pump for internal leaks.Replace the power steering pump.
Check for a loose or a worn intermediate shaft.Tighten the intermediate shaft. Replace the intermediate
shaft as needed.
Check the power steering pump serpentine belt tension.Tighten the power steering serpentine belt.

Page 1922 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual POWER STEERING GEAR 6C – 5
DAEWOO V–121 BL4
POWER RACK AND PINION
STEERING GEAR BENCH TESTING
Removal, Setup and Testing Procedure
Notice : Pressure checks or pressure and flow checks
may also be

Page 1923 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 6C – 6IPOWER STEERING GEAR
DAEWOO V–121 BL4
SPEED SENSITIVE POWER STEERING SYSTEM

Page 1924 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual POWER STEERING GEAR 6C – 7
DAEWOO V–121 BL4
SPEED SENSITIVE POWER STEERING SYSTEM
OPERATING WITH FULL ASSIST AT ALL TIMES
StepActionValue(s)YesNo
1Perform an initial inspection of the power steer

POWER STEERING GEAR 6C – 7
DAEWOO V–121 BL4
SPEED SENSITIVE POWER STEERING SYSTEM
OPERATING WITH FULL ASSIST AT ALL TIMES
StepActionValue(s)YesNo
1Perform an initial inspection of the power steering
system.
Is the system operational?–Go to Step 2Go to
Section 6A,
Power Steering
System
2Check the speedometer.
Is the speedometer inoperative?–Go to
Section5,
TransaxleGo to Step 3
3Check the diagnostic trouble codes at the engine
control module (ECM).
Is the ECM code 24 set?–Go to
Section1F,
Engine
ControlsGo to Step 4
41. Turn the ignition ON.
2. Disconnect the electronic variable orifice (EVO)
solenoid actuator electrical connector at the
power steering pump.
3. Probe terminal 1 of the EVO actuator connec-
tor with a voltmeter.
Does the voltmeter display the specified value?–Go to Step 6Go to Step 5
5Repair the open or short in the circuit between termi-
nal 1 of the EVO solenoid actuator electrical connec-
tor and terminal 2 on the speed sensitive power
steering (SSPS) control module connector.
Is the repair complete?–System OK–
61. Remove the EVO solenoid actuator from the
power steering pump.
2. Turn the actuator upside down to position the
pintle.
3. Stimulate the actuator by connecting it to the
battery.
Does the actuator click?–Go to Step 8Go to Step 7
7Replace the EVO solenoid actuator.
Is the repair complete?–System OK–
81. Turn the ignition OFF.
2. Remove the SSPS control module from the
control module bracket.
3. Disconnect the SSPS control module connec-
tor.
4. Connect a test light from terminal 8 on the
SSPS control module connector to the ground.
5. Turn the ignition ON.
Is the test light on?–Go to Step 14Go to Step 9
9Check the ignition fuse.
Is the ignition fuse open?–Go to Step 10Go to Step 11
10Replace the ignition fuse.
Is the repair complete?–System OK–
11Check for an open or short in the circuit between ter-
minal 8 of the control module connector and the I/P
fuse block.
Is the connection faulty?–Go to Step 12Go to Step 13

Page 1925 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 6C – 8IPOWER STEERING GEAR
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
12Repair the open or short in the circuit between termi-
nal 8 of the SSPS control module connector and the
I/P fuse block.
I

6C – 8IPOWER STEERING GEAR
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
12Repair the open or short in the circuit between termi-
nal 8 of the SSPS control module connector and the
I/P fuse block.
Is the repair complete?–System OK–
13Repair the power feed to the ignition fuse F2.
Is the repair complete?–System OK–
141. Turn the ignition OFF.
2. Connect a test light from terminal 10 of the
SSPS control module connector to B+.
Is the test light on?–Go to Step 16Go to Step 15
15Repair the open in the ground circuit between termi-
nal 10 of the SSPS control module connector and
G203.
Is the repair complete?–System OK–
16Check for a short to B+ or an open in the circuit be-
tween terminal 1 of the SSPS control module con-
nector and terminal B of the EVO solenoid actuator
connector.
Is the connection faulty?–Go to Step 17Go to Step 18
17Repair the short to B+ or an open in the circuit be-
tween terminal 1 of the SSPS control module con-
nector and terminal 2 of the EVO solenoid actuator
connector.
Is the repair complete?–System OK–
181. Disconnect the steering wheel rotation sensor.
2. Turn the ignition ON.
3. Check for an open, short to ground, short to
B+, or poor terminal contact between terminal
5 of the SSPS control module connector and
terminal 1 of the steering wheel rotation sensor
connector.
Is the connection faulty?–Go to Step 19Go to Step 20
19Repair the open, short to ground, short to B+, or poor
terminal contact between terminal 5 of the SSPS
control module connector and terminal 1 of the
steering wheel rotation sensor connector.
Is the repair complete?–System OK–
20Check for an open between terminal 3 of the SSPS
control module connector and terminal 3 of the
steering wheel rotation sensor connector.
Is the connection faulty?–Go to Step 21Go to Step 22
21Repair the open between terminal 3 of the SSPS
control module connector and terminal 3 of the
steering wheel rotation sensor connector.
Is the repair complete?–System OK–
22Check for an open, short to ground, short to B+, or
poor terminal contact between terminal 14 of the
SSPS control module connector and terminal 2 of
the steering wheel rotation sensor connector.
Is the connection faulty?–Go to Step 23Go to Step 24

Page 1926 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual POWER STEERING GEAR 6C – 9
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
23Repair the open, short to ground, short to B+, or poor
terminal contact between terminal 14 of the SSPS
control module con

POWER STEERING GEAR 6C – 9
DAEWOO V–121 BL4
StepNo Yes Value(s) Action
23Repair the open, short to ground, short to B+, or poor
terminal contact between terminal 14 of the SSPS
control module connector and terminal 2 of the
steering wheel rotation sensor connector.
Is the repair complete?–System OK–
241. Turn the ignition OFF.
2. Connect the SSPS control module.
3. Connect the steering wheel rotation sensor.
4. Turn the ignition ON.
5. Backprobe with a voltmeter from terminal 5 on
the control module connector to the ground.
6. Rotate the steering wheel quickly in both direc-
tions.
Does the voltage show an increase and decrease
from the specified value? 3 VGo to Step 25Go to Step 26
25Replace the SSPS control module.
Is the repair complete?–System OK–
26Replace the steering wheel rotation sensor.
Is the repair complete?–System OK–
SPEED SENSITIVE POWER STEERING SYSTEM
OPERATING WITH DECREASED ASSIST AT ALL TIMES
StepActionValue(s)YesNo
1Check the speedometer.
Is speedometer inoperative?–Go to
Section5,
TransaxleGo to Step 2
2Disconnect the EVO solenoid actuator at the power
steering pump.
Is the symptom still present?–Go to
Section 6A,
Power Steering
SystemGo to Step 3
3Replace the speed sensitive poser steering (SSPS)
control module.
Is repair complete?–System OK–
General Operation
The control module self–diagnoses SSPS system. If there
is any malfunction, the warning lamp comes ON and at the
same time a trouble code is set. The trouble code can be
retrieved or cleared only by SCANTOOL.
In normal condition, If the ignition is turned on, the warning
lamp comes on for the first 2 sec and out. During this 2 sec,
the control module is diagnosing SSPS system, so a driver
can feel a little heavy steering effort.
If the warning lamp stays on after the 2 sec or comes on
afterward, it means there is a malfunction and a related
trouble code is recorded.
The warning lamp once come on does not go off even if the
malfunction is cleared. It goes off after ignition is turned off
and on without a malfunction.However the trouble code still remains in the control mod-
ule.

Page 1927 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 6C – 10IPOWER STEERING GEAR
DAEWOO V–121 BL4
Trouble Code
DTCTroubleDefault Action
01Actuator circuit open
02Actuator HI to LO short
03Actuator circuit short to B+
04Actuator HI short to GroundWar

Page 1928 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual POWER STEERING GEAR 6C – 11
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
RACK AND PINION ASSEMBLY
(Left–Hand Drive Shown, Right–Hand Drive
Similar)
Tools Required
KM–507–

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