Toyota Tundra Service Manual > Vehicle Stability Control System: Center Differential Lock Circuit (C1340)
DESCRIPTION The skid control ECU monitors the 2WD/4WD state from both the 4 wheel drive control ECU and the A.D.D. detection switch. DTC No. Detection Item DTC Detection Condition Trouble Area C1340 Center Differential Lock Circuit On a 4WD vehicle, a normal A.D.D. detection switch signal is input v ...