DTC C1240: 4WD Control Module Power Supply Circuit Malfunction: Troubleshooting

C1240: 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	4WD control module power circuit check Disconnect 4WD control module connector with ignition switch OFF. Check for proper connection to "G26" terminal of 4WD control module connector. If connection is OK, measure voltage between "G26-11" terminal of 4WD control module connector and vehicle body ground. Is it 10 - 14 V?	Go to Step 3.	"4WD" fuse blown, "ORN" or "YEL" wire is circuit open or circuit short.
3	Ground circuit check Turn ignition switch to OFF position. Check for proper connection to "G26-10" terminal of 4WD control module connector. If OK, measure resistance between "G26- 10" terminal of 4WD control module connector and vehicle body ground. If resistance 1 Ω or less?	Substitute a known-good 4WD control module and recheck.	Repair ground circuit.