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Suzuki SX4 Service Manual page 944

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6C-10 Power Assisted Steering System:
DTC No.
Detecting item
No vehicle speed signal
C1121
(60 Seconds or More)
Engine speed signal
C1122
No vehicle speed signal
C1123
(30 seconds or more)
Vehicle speed
performance
C1124
(impossible
deceleration)
Detecting condition
(DTC will set when detecting)
Vehicle speed signal is 0 km/h
even though engine speed is
more than 4000 rpm for more
than 60 seconds continuously
(before elapse of 5 min from
engine start)
or
vehicle speed signal is 0 km/h
even though engine speed is
more than 2500 rpm for more
than 60 seconds continuously
(after elapse of 5 min for engine
start).
Engine speed signal is less than
220 rpm for more than 0.8
seconds.
or
Engine speed signal is less than
220 rpm for more than 20
seconds continuously even
though vehicle speed signal is
more than 50 km/h.
Vehicle speed signal is 0 km/h
with continuously more than 3
driving cycles even though
engine speed is more than 4000
rpm for more than 30 seconds
continuously (before elapse of 5
min from engine start)
or
vehicle speed signal is 0 km/h
with continuously more than 3
driving cycles even though
engine speed is more than 2500
rpm for more than 30 seconds
continuously (after elapse of 5
min for engine start).
Vehicle speed signal is less than
5 km/h for more than 5 seconds
continuously with more than
specified deceleration speed (–
20 m/s
2
) from over 20 km/h.
Trouble area
• Vehicle speed signal
circuit
• BCM
• ECM
• TCM (A/T model)
• ABS control module (M/
T model)
• P/S control module
• CAN communication
line circuit
• Engine speed signal
circuit
• ECM
• P/S control module
• Vehicle speed signal
circuit
• BCM
• ECM
• TCM (A/T model)
• ABS control module (M/
T model)
• P/S control module
• CAN communication
line circuit
"EPS"
DTC
warning
light
1 driving
Does not
cycle
light up
1 driving
1 driving
cycle
cycle
3 driving
3 driving
cycle
cycle
1 driving
Does not
cycle
light up

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