2005 SUZUKI SWIFT Steering wheel wire

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-35
Inspection of P/S Control Module and Its CircuitsS7RS0B6304023
The P/S control module (1) and its circuits can be checked at the P/S control module wiring couplers (2) 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.

5 P/S control module ground circuit check
1) Connect connectors to P/S control module.
2) Start engine.
3) Measure voltage between “E49-2” terminals of P/S
control module connector and body ground when
steering wheel fully turned to left or right.
Is voltage 0.3 V or less? P/S Control Module
Power Supply and
Ground Circuit is in
good condition.
“BLK” wire is open or
high resistance circuit.
Step Action Yes No
[A]
12
3
4 5 67
89
11
10
12 13
141516
17 18 19 20
[B]
[C]
12
1
1 2
2
I6RS0C630016-03
[A]: Connector “E52” (viewed from harness side) [C]: Connector “E49” (viewed from harness side)
[B]: Connector “E51” (viewed from harness side)

Downloaded from www.Manualslib.com manuals search engine 6C-36 Power Assisted Steering System:
Voltage Check1) Remove console box.
2) Check for voltage at each terminal with co nnectors 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.
*: The voltage of this circuit may not be checked by voltmeter. If so, use oscilloscope.

Terminal Wire colorCircuit Normal voltage Remarks
E49-1 GRN Main power supply for
internal memory and P/S
motor 10 – 14 V
—
E49-2 BLK Ground for P/S control
module Below 0.3 V
—
E51-1 BLK Motor output 1 *0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”, “Reference
waveform No.2:
”and “Reference
waveform No.3: ”) • Engine idling and steering wheel at
straight position
• Voltage between “E51-1” and vehicle body ground
E51-2 RED Motor output 2 *0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.1: ”, “Reference
waveform No.2: ” and “Reference
waveform No.3: ”) • Engine idling and steering wheel at
straight position
• Voltage between “E51-2” and vehicle body ground
E52-1 LT GRN/BLK Ignition switch signal for P/S
control module 10 – 14 V Ignition switch ON
E52-2 — —— —
E52-3 — —— —
E52-4 PPL Vehicle speed signal *0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.9”
under “Inspection of
ECM and Its Circuits in Section 1A”.) • Ignition switch ON
•Front left tire tu
rned quickly with right
tire locked
E52-5 GRY “EPS” warning light 0 V “EPS” warning light OFF
E52-6 BLU Torque sensor signal (Sub) About 0 – 2.5 V
• Steering wheel with left turn
• Out put voltage varies linearly
depending on steering force
About 2.5 V Steering wheel at free
About 2.5 – 6 V • Steering wheel with right turn
• Out put voltage varies linearly
depending on steering force
E52-7 — —— —
E52-8 GRN Main power supply for torque
sensor About 12 V• Ignition switch ON
• Check voltage between “E52-8” and
“E52-9” terminals
E52-9 BRN Ground for torque sensors Below 0.3 V —
E52-10 — —— —

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E52-11 PPL/WHT Data link connector——
E52-12 BRN Engine speed signal *0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.30” and “Reference
waveform No.31”
under “Inspection of
ECM and Its Circuits in Section 1A”.) Engine idling
E52-13 — —— —
E52-14 RED/BLU P/S operation signal (idle up
signal) About 12 V Ignition switch ON
0 – 1 V Engine idling and turned steering
wheel to the right or left until it stops
E52-15 — —— —
E52-16 YEL Torque sensor internal failure
signal About 5 V At the moment of Ignition switch ON
0 V Ignition switch ON
E52-17 — —— —
E52-18 WHT Torque sensor signal (Main) About 0 – 2.5 V
• Steering wheel with left turn
• Out put voltage varies linearly
depending on steering force
About 2.5 V Steering wheel at free
About 2.5 – 6 V • Steering wheel with right turn
• Out put voltage varies linearly
depending on steering force
E52-19 GRY Ground for shield wire Below 0.3 V—
E52-20 RED 5 V reference power supply
for torque sensor About 5 V• Ignition switch ON
• Check voltage between “E52-20”
and “E52-9” terminals
Terminal Wire color
Circuit Normal voltage Remarks

Downloaded from www.Manualslib.com manuals search engine 8B-46 Air Bag System:
2 1) With ignition switch OFF, disconnect “L32” connector located near the glove box.
2) Check proper connection to floor harness connector at terminal “L32-3” and “L32-4”.
3) If OK, then connect special tools (B) and (C) to “L32” connector disconnected in Step 1).
Special tool
(B): 09932-75010
(C): 09932–77320
4) Check SDM DTC.
NOTE
At this time, DTC B1031 ma y be output, but it is
not related to this check.

With ignition switch ON , is DTC B1041 indicated? Go to Step 3. High resistance or open
wire “BLU/RED” or
“YEL/RED” circuit in
instrument panel
harness.
Step Action Yes No
(B) (C)
"L32"STEERING WHEEL
DRIVERPASSENGER
I4RS0A820022-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-47
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1042: Passenger Air Bag Initiator Circuit Resistance LowS7RS0B8204023
Wiring Diagram3 1) With ignition switch OFF, disconnect SDM connector
“L29”.
2) Check proper connection to SDM at terminals “L29-5” and “L29-6”.
3) If OK, release shorting bar in SDM connector inserting
release too (1) included in special tool (A).
4) Measure resistance between “L29-5” and “L29-6” terminals with connected special tools (B) and (C).
Special tool
(A): 09932-76010
(B): 09932-75010
(C): 09932–77320
Is resistance 2.82
Ω or less? Substitute a known-
good SDM and recheck.
High resistance or open
wire in “BLU/RED” or
“YEL/RED” circuit in
floor harness.
Step Action Yes No
(A)
"L29-6"
"L29-5"
(B) (C)
"L32"STEERING WHEEL
DRIVERPASSENGER
I7RS0A820014-05
1
2
3
GRN
RED
7
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-5
P+
L29-6
P-YEL/RED
BLU/RED
YEL/RED
BLU/RED
56
“L32” “G04”
“G10”
[A]
I7RS0A820013-06
[A]: Shorting bar
3. “A/BAG” fuse 6. Passenger air bag (inflator) module
1. From main fuse 4. Junction block assembly 7. Ground for air bag system
2. Ignition switch 5. SDM

Downloaded from www.Manualslib.com manuals search engine 8B-48 Air Bag System:
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adaptor from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The combined resistance of the passenger air bag (inflator) module, harness wiring and connector terminal contact is
below a specified value for specified time.
Flow Test Description
Step 1: Check if malfunction is in passenger air bag (inflator) module.
Step 2: Check passenger air bag (inflator) module initiator circuit. (in instrument panel harness)
Step 3: Check passenger air bag (inflator) module initiator circuit. (in floor harness)
DTC Troubleshooting Step Action YesNo
1 1) With ignition switch OFF, disconnect passenger air bag (inflator) module connector.
2) Check proper connection to passenger air bag (inflator) module at terminals in “G10” connector.
3) If OK, then connect special tools (A), (B) and (D) to “G10” connector.
Special tool
(A): 09932–76010
(B): 09932–75010
(D): 09932–78310
4) Check SDM DTC.
With ignition switch ON , is DTC B1042 indicated? Go to Step 2.
Turn ignition switch
OFF. Replace
passenger air bag
(inflator) module
referring to “Passenger
Air Bag (Inflator) Module
Removal and
Installation”.
STEERING WHEEL(B)
(D)
(A)
"G10"
I4RS0A820021-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-51
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adaptor from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The voltage measured at passenger air bag (initiator) circuit is below a specified value for specified time.
Flow Test Description
Step 1: Check if malfunction is in passenger air bag (inflator) module.
Step 2: Check passenger air bag (inflator) module initiator circuit. (in instrument panel harness)
Step 3: Check passenger air bag (inflator) module initiator circuit. (in floor harness)
DTC Troubleshooting Step Action YesNo
1 1) With ignition switch OFF, disconnect passenger air bag (inflator) module connector.
2) Check proper connection to passenger air bag (inflator) module at terminals in “G10” connector.
3) If OK, then connect special tools (A), (B) and (D) to “G10” connector.
Special tool
(A): 09932–76010
(B): 09932–75010
(D): 09932–78310
4) Check SDM DTC.
With ignition switch ON , is DTC B1043 indicated? Go to Step 2.
Turn ignition switch
OFF. Replace
passenger air bag
(inflator) module
referring to “Passenger
Air Bag (Inflator) Module
Removal and
Installation”.
STEERING WHEEL(B)
(D)
(A)
"G10"
I4RS0A820021-01

Downloaded from www.Manualslib.com manuals search engine 8B-54 Air Bag System:
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adaptor from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The voltage measured at passenger air bag (initiator) circuit is above a specified value for specified time.
Flow Test Description
Step 1: Check if malfunction is in passenger air bag (inflator) module.
Step 2: Check passenger air bag (inflator) module initiator circuit. (in instrument panel harness)
Step 3: Check passenger air bag (inflator) module initiator circuit. (in floor harness)
DTC Troubleshooting Step Action YesNo
1 1) With ignition switch OFF, disconnect passenger air bag (inflator) module connector.
2) Check proper connection to passenger air bag (inflator) module at terminals in “G10” connector.
3) If OK, then connect special tools (A), (B) and (D) to “G10” connector.
Special tool
(A): 09932–76010
(B): 09932–75010
(D): 09932–78310
4) Check SDM DTC.
With ignition switch ON , is DTC B1044 indicated? Go to Step 3.
Turn ignition switch
OFF. Replace
passenger air bag
(inflator) module
referring to “Passenger
Air Bag (Inflator) Module
Removal and
Installation”.
STEERING WHEEL(B)
(D)
(A)
"G10"
I4RS0A820021-01