Suzuki Swift Sport 2004 Service & Repair Manual page 900

6C-18 Power Assisted Steering System:
Step
4 Torque sensor signal (main) voltage check
1) Check for voltage between "E53-5" ("WHT" wire)
terminal and body ground with ignition switch ON.
Is it about 0 V?
5 Torque sensor signal (main) resistance check
1) Check for resistance "E53-5" ("WHT" wire) terminal and
body ground terminal with ignition switch OFF.
Ω
Is it about 1 M ?
6 Torque sensor output voltage check
1) Connect connector to torque sensor with ignition switch
turned OFF.
2) Check torque sensor out put voltage referring to "Torque
Sensor and Its Circuit Inspection".
Is torque sensor in good condition?
7 Torque sensor (sub) circuit wire check
1) Disconnect P/S control module.
2) Check that torque sensor signal (sub) circuit is as
follows.
• Insulation resistance of wire harness is infinity
between "Torque sensor signal (sub) circuit" terminal
and other terminal at torque sensor connector.
• Wiring harness resistance of "Torque sensor signal
(sub) circuit" is less than 1 Ω.
• Insulation resistance between "Torque sensor (sub)
signal circuit" and vehicle body ground is infinity.
• Circuit voltage between "Torque sensor signal (sub)
circuit" circuit and ground circuit is 0 – 1 V with ignition
switch turned ON.
Is circuit in good condition?
8 Torque sensor (main) circuit wire check
1) Disconnect P/S control module.
2) Check that torque sensor (main) signal circuit is as
follows.
• Insulation resistance of wire harness is infinity
between "Torque sensor (main) signal circuit" terminal
and other terminal at torque sensor connector.
• Wiring harness resistance of "Torque sensor (main)
signal circuit" is less than 1 Ω.
• Insulation resistance between "Torque sensor (main)
signal circuit" and vehicle body ground is infinity.
Is circuit in good condition?
Action Yes
Go to Step 5.
Go to Step 6.
Substitute a known-
good P/S control
module and recheck.
Replace P/S control
module.
Replace P/S control
module.
No
Torque sensor signal
circuit is shorted to
other circuit.
Go to Step 8.
Replace steering gear
case.
Repair or replace
defective circuit.
Repair or replace
defective circuit.