Suzuki 2006 SX4, Service Manual

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6C-22 Power Assisted Steering System:
DTC Troubleshooting
Step Action Yes No
1 Was “EPS System Check” performed? Go to Step 2. Go to “EPS System
Check”.
2 DTC check
Is DTC C1153 indicated, together?
Go to applicable DTC
diag. flow. Go to Step 3.
3 Torque sensor power supply voltage check
1) With ignition switch turned OFF, disconnect torque
sensor connector.
2) Check for voltage between “E31-3” (“GRN” wire)
terminal and body ground with ignition switch ON.
Is it approx. 9 V?
Go to Step 4. Go to Step 5.
4 Torque sensor power supply voltage check
1) With ignition switch turned OFF, connect torque sensor
connector.
2) Check for voltage between “E11-8” (“GRN” wire)
terminal and body ground with ignition switch ON.
Is it approx. 9 V?
Substitute a known-
good P/S control
module and recheck. Replace steering gear
case.
5 Torque sensor power supply circuit check
1) Check that torque sensor power supply circuit is as
follows.
• Insulation resistance of wire harness is infinity
between “Torque sensor power supply circuit” terminal
and each other terminal at torque sensor connector.
• Wiring harness resistance of “Torque sensor power
supply circuit” is less than 1
Ω
.
• Insulation between “Torque sensor power supply
circuit” and vehicle body ground is infinity.
Is circuit in good condition?
Replace P/S control
module. Repair or replace
defective circuit.