DTC C1254: 2WD/4WD Switch Malfunction: Troubleshooting

WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.

C1254: SYMPTOM TROUBLESHOOTING REFERENCE CHART

Step	Action	YES	NO
1	Was "4WD control system check" performed?	Go to Step 2.	Go to 4WD CONTROL SYSTEM CHECK .
2	2WD/4WD switch circuit check Disconnect 2WD/4WD switch connector "L174" with ignition switch turned OFF. Check for proper connection to "L174-1" and "L174-5" terminals of 2WD/4WD switch connector. If connection is OK, measure voltage between "L174-1" terminal or "L174-5" terminal of 2WD/4WD switch connector and vehicle body ground. Is it 10 - 14 V?	Go to Step 3.	Go to Step 5.
3	2WD/4WD switch ground circuit check Measure resistance between "L174-4" terminal of 2WD/4WD switch connector and vehicle body ground with ignition switch turned OFF. Is resistance below 5 Ω?	Go to Step 4.	"BLK/ORN" wire is shorted to ground.
4	2WD/4WD switch check Check 2WD/4WD switch referring to 2WD/4WD SWITCH INSPECTION . Is it in good condition?	Substitute a known-good 4WD control module and recheck.	Replace 2WD/4WD switch.
5	2WD/4WD switch circuit check Disconnect connector from 4WD control module connector "G26" with ignition switch turned OFF. Check for shorted to ground in related circuits. Between "G26-13" terminal of 4WD control module connector and "L174-5" terminal of 2WD/4WD switch connector. Between "G26-14" terminal of 4WD control module connector and "L174-1" terminal of 2WD/4WD switch connector. Are they in good condition?	Substitute a known-good 4WD control module and recheck.	Repair circuit.