Dtc Table; Fail-Safe Table - Suzuki 2006 SX4 Service Manual

DTC Table

DTC No.
4WD control module power
C1240
supply circuit malfunction
Internal circuit malfunction of
C1243
4WD control module
Coupling air temperature sensor
C1250
open
Coupling air temperature sensor
C1251
short
C1252 Coupling assembly open
C1253 Coupling assembly short
C1254 2WD/4WD switch malfunction
Control module communication
U0073
bus off
U0100 Lost communication with ECM
Lost communication with ABS /
U0121
ESP® control module
Lost communication with
U0155 instrument panel cluster control
module
NOTE
"O" in transfer position indicator column of the above table means indicator lights up when DTC is
detected.

Fail-Safe Table

This function is provided by the safe mechanism that assures safe driveability even when the coupling assembly,
switch, sensor or its circuit fails. The following table shows the fail safe function for each fail condition of sensor,
coupling assembly, switch, 4WD control module or its circuit.
DTC No.
4WD control module power supply circuit
C1240
malfunction
Internal circuit malfunction of 4WD control
C1243
module
C1250 Coupling air temperature sensor open
C1251 Coupling air temperature sensor short
C1252 Coupling assembly open
C1253 Coupling assembly short
C1254 2WD/4WD switch malfunction
U0073 Control module communication bus off
U0100 Lost communication with ECM
Lost communication with ABS / ESP® control
U0121
module
Lost communication with instrument panel
U0155
cluster control module
Detecting item
Trouble Area
Detecting condition
(DTC will set when detecting)
Battery voltage is lower than lower limit voltage for
4WD control module diagnosis.
Internal power supply malfunction of 4WD control
module
Sensor output voltage too high
Sensor output voltage too low
2WD/4WD switch is changed of 4WD lock position,
and then vehicle is not changed for more than 5
seconds.
2WD/4WD switch is changed of 4WD lock position,
and then vehicle is not changed for more than 5
seconds.
Different switch combination from specification is
detected more than 5 seconds.
Transmitting and receiving error of 4WD control
module for specified time continuously
Receiving error of 4WD control module from ECM
for specified time continuously
Receiving error of 4WD control module from ABS /
ESP® control module for specified time
continuously
Receiving error of 4WD control module from
combination meter for specified time continuously
4WD control module controls the current and
fixed the vehicle to 2WD position.
Differential:
S6RW0D3204007
S6RW0D3204008
Fail-Safe Operation
3B-12
4WD
position
Indicator