Page 908 of 1556

Downloaded from www.Manualslib.com manuals search engine 6C-28 Power Assisted Steering System:
DTC Troubleshooting
DTC C1155: P/S Control Module Internal FailureS6RW0D6304018
Wiring Diagram
Refer to “DTC C1153: P/S Control Module Power Supply Circuit”.
DTC Detecting Condition and Trouble Area
DTC TroubleshootingStep Action Yes No
1Was “EPS System Check” performed?Go to Step 2. Go to “EPS System
Check”.
2Battery voltage check
1) Check circuit fuse for P/S control module.
2) If OK, measure voltage between positive (+) battery
terminal and vehicle body ground with engine running.
Is voltage 10 V or more?Go to Step 3. Check charging system
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.
3P/S control module power supply circuit check
Check power supply circuit and ground circuit for P/S control
module referring to “P/S Control Module Power Supply and
Ground Circuit Check”.
Is check result in good condition?Substitute a known-
good P/S control
module and recheck.Repair defective circuit.
DTC detecting condition Trouble area
Internal memory (EEPROM) is data error.
(In this case, “EPS” warning light does not light up)
or
Internal circuit is faulty.
or
Power supply voltage of P/S control module exceeded
17.5 V
(1 driving cycle detection logic)• Generator
• P/S control module
Step Action Yes No
1Was “EPS System Check” performed?Go to Step 2. Go to “EPS System
Check”.
2P/S control module power supply and ground circuit
check
Check power supply circuit and ground circuit for P/S control
module referring to “P/S Control Module Power Supply and
Ground Circuit Check”.
Is check result in good condition?Go to Step 3. Repair or replace
defective circuit.
3Battery voltage check
1) Check voltage between positive (+) battery terminal and
vehicle body ground with engine speed at 3000 rpm.
Is voltage 15.5 V or less?Replace P/S control
module.Check charging system
referring to “Generator
Test (Overcharged
Battery Check) in
Section 1J”.
Page 910 of 1556

Downloaded from www.Manualslib.com manuals search engine 6C-30 Power Assisted Steering System:
Inspection of P/S Control Module and Its CircuitsS6RW0D6304020
The P/S control module and its circuits can be checked at the P/S control module wiring couplers by measuring
voltage and resistance.
CAUTION!
P/S control module cannot be checked by itself. It is strictly prohibited to connect voltmeter or
ohmmeter to the P/S control module with connectors disconnected from the P/S control module.
Voltage Check
1) Remove console box.
2) Check for voltage at each terminal with connectors connected to the P/S control module.
NOTE
As each terminal voltage is affected by the battery voltage, confirm if the battery voltage is 11 V or
more when ignition switch is ON.
[C]
[A]
123
4567
8
9 11
10 12 13
141516
17 18 1920
1
2
[B]
1
2
I7RW01632020-01
[A]: P/S control module connector No.1 “E11” (viewed from harness side)
[B]: P/S control module connector No.2 “E13” (viewed from harness side)
[C]: P/S control module connector No.3 “E12” (viewed from harness side)
Page 921 of 1556

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-41
P/S Control Module Removal and InstallationS6RW0D6306011
Removal
1) Disconnect negative cable at battery.
2) Remove console box.
3) Disconnect connectors (1) from P/S control module.
4) Remove P/S control module and bracket (2) from
floor panel.
5) Separate P/S control module and bracket.
Installation
Reverse removal procedure.
Torque Sensor and Its Circuit InspectionS6RW0D6306012
1) Check that torque sensor circuit is in good condition
referring to Step 2 to 3 of “DTC C1111 / C1113 /
C1115: Torque Sensor Circuit Failure”. If check result
is not satisfactory, repair torque sensor circuit.
2) Remove console box.
3) With ignition switch turned OFF, connect scan tool to
DLC or connect voltage tester between “E11-18” –
“E11-9” (main sensor) or “E11-10” – “E11-9” (sub
sensor) with connected connector to P/S control
module.
4) Set torque wrench to steering wheel referring to
“Steering Force Check” for checking steering force.
1
2
I5RW0A630027-01
[A]: Main sensor [B]: Sub sensor
E11
1818
E11
10
[A]
[B]
9 9
I7RW01632021-01
I3RM0A630022-01
Page 924 of 1556
Downloaded from www.Manualslib.com manuals search engine 6C-44 Power Assisted Steering System:
Special Tools and Equipment
Recommended Service MaterialS6RW0D6308001
NOTE
Required service material is also described in the following.
“Steering Gear Case Assembly Components”
Special ToolS6RW0D6308002
Material SUZUKI recommended product or Specification Note
Grease SUZUKI Super Grease E P/No.: 99000–25050 )
Water tight sealant SUZUKI Bond No.1207F P/No.: 99000–31250 )
09944–18220 SUZUKI scan tool
Pinion torque checking
socket—
)This kit includes following
items. 1. Tech 2, 2. PCMCIA
card, 3. DLC cable, 4. SAE
16/19 adapter, 5. Cigarette
cable, 6. DLC loop back
adapter, 7. Battery power
cable, 8. RS232 cable, 9.
RS232 adapter, 10. RS232
loop back connector, 11.
Storage case, 12. ) / )
Page 932 of 1556

Downloaded from www.Manualslib.com manuals search engine 7A-4 Heater and Ventilation:
Repair Instructions
HVAC Unit ComponentsS6RW0D7106001
For non-A/C and manual A/C, refer to “HVAC Unit
Components in Section 7B”.
For auto A/C, refer to “HVAC Unit Components in
Section 7B”.
HVAC Unit Removal and Installation (Non-A/C)S6RW0D7106002
For manual A/C and auto A/C, refer to “HVAC Unit
Removal and Installation in Section 7B”.
Removal
1) Drain engine coolant referring to “Cooling System
Draining in Section 1F”, and then disconnect heater
hoses from HVAC unit.
2) Remove cowl top cover from vehicle body referring
to “Cowl Top and Front Lower Crossmember
Components in Section 9K”.
3) Remove instrument panel from vehicle body
referring to “Instrument Panel Removal and
Installation in Section 9C”.
4) Remove HVAC unit (1) from vehicle body by
removing nuts (2).Installation
Reverse removal procedure noting the following
instructions.
• Be careful not to catch any cable and wiring harness
in inappropriate position.
• Adjust control cables of HVAC control unit referring to
“HVAC Control Unit Removal and Installation”.
• Refill cooling system with coolant referring to “Cooling
System Flush and Refill in Section 1F”.
Blower Motor Removal and InstallationS6RW0D7106003
Removal
1) Disconnect negative (–) cable from battery.
2) Disconnect connector (1) from blower motor (2).
3) Remove blower motor (2) from HVAC unit as follows.
a) Remove screws (4).
b) Release tub (3) to arrow direction.
c) Hold Step b) and turn blower motor (2) to arrow
direction.
Installation
Reverse removal procedure.
Blower Motor InspectionS6RW0D7106004
• Check blower motor for resistance between two
terminals as shown.
If there is no continuity, replace blower motor.
2
2
2
1
I7RW01710003-01
3
2
b)
c)
1
4
4I7RW01710004-02
I7RW01710005-01
Page 933 of 1556

Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-5
• Check for operation and current.
a. Put blower motor (1) in a soft-jawed vise.
b. Connect battery to blower motor as shown.
c. Check if blower motor operates smoothly without
noise.
d. Check if ammeter indicates the specified current.
If measured current is out of specification, replace
blower motor.
Blower motor specified current at 12 V
18.5 A maximum at 20 – 25 °C (68 – 77 °F)
Blower Motor Resistor Removal and InstallationS6RW0D7106005
Removal
1) Disconnect negative (–) cable from battery.
2) Remove glove box from instrument panel.
3) Remove passenger side foot duct (1) from HVAC
unit by removing screw (2).4) Disconnect connector (1) from blower motor resistor
(2), and then remove blower motor resistor from
HVAC unit by removing screws (3).
Installation
Reverse removal procedure.
Blower Motor Resistor InspectionS6RW0D7106006
Measure each terminal-to-terminal resistance. If
measured resistance is out of specification, replace
blower motor resistor.
Blower motor resistor resistance
“H” – “MH”: Approx. 0.43 Ω at 20 – 25 °C (68 – 77 °F)
“MH” – “ML”: Approx. 0.6 Ω at 20 – 25 °C (68 – 77 °F)
“ML” – “L”: Approx. 2.0 Ω at 20 – 25 °C (68 – 77 °F)
1
I7RW01710006-01
1
2
I7RW01710007-01
2
3
1
I7RW01710008-01
I7RW01710009-02
Page 934 of 1556

Downloaded from www.Manualslib.com manuals search engine 7A-6 Heater and Ventilation:
Blower Motor Relay InspectionS6RW0D7106007
1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air
Bag System in Section 8B”.
3) Remove junction block assembly (2).
4) Disconnect blower motor relay (1) from junction
block assembly (2).
5) Check that there is no continuity between terminal
“C” and “D”. If there is continuity, replace relay.
6) Connect battery positive (+) terminal to terminal “B”
of relay. Connect battery negative (–) terminal “A” of
relay.
Check continuity between terminal “C” and “D”.
If there is no continuity when relay is connected to
the battery, replace relay.
HVAC Control Unit ComponentsS6RW0D7106008
“D” “B”“A”“C”
1
2
I4RS0B710008-01
1. Heater control body assembly 4. Bulb 7. Air intake selector 10. Rear defogger switch
2. Air flow selector 5. Temperature control cable 8. Temperature selector
3. Blower speed selector 6. Air flow control cable 9. A/C switch (if equipped)
7
10
9
2
3 8
45
61
I5RW0A710005-01
Page 935 of 1556

Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-7
HVAC Control Unit Removal and InstallationS6RW0D7106009
Removal
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover from instrument
panel.
3) Remove audio unit from instrument panel referring to
“Audio Unit Removal and Installation (If Equipped) in
Section 9C”.
4) Remove driver side foot duct (1) from HVAC unit by
removing screw (2).
5) Disconnect temperature control cable (1) and air
flow control cable (2) from HVAC unit (3).
LH steering vehicleRH steering vehicle
6) Remove center garnish from instrument panel.
7) Remove HVAC control unit from instrument panel.
8) Disconnect connectors from HVAC control unit.
Installation
Reverse removal procedure noting the following
instructions.
• Connect temperature control cable and air flow control
cable of HVAC control unit to links of HVAC unit.
a. For LH steering vehicle, set airflow selector (1) to
“DEF” position and temperature selector (2) to
“MAX HOT” position.
For RH steering vehicle, set airflow selector (1) to
“VENT” position and temperature selector (2) to
“MAX COOL” position.
1
2
I7RW01710010-01
I7RW01710012-02
F: Vehicle forward
I6RW0C710005-01
12I4RS0B710013-01
12I4RS0A710016-01