For 4 Wheel Drive Vehicle: DTC Detecting Condition
DTC C1258 will be set when EBCM detects voltage on 4 wheel drive input circuit is neither high (near 12 V for 2WD) nor low (under 1 V for 4WD). DTC C1258 will be set when voltage on the 4WD request circuit is between 5.25 V and 3.36 V at any time.