5D2-44 TRANSFER CASE - TOD DIAGNOSTIC TROUBLE CODE (DTC) 1731 Front Speed Sensor Voltage Low Diagnostic Aids • Check for short to ground or open circuit. • Check for front propeller speed sensor. Circuit Description The transfer case control unit (TOD) supplies 5 volts reference voltage to the front speed sensor and receives speed signals generated by Hall effect speed sensor. Test Description The number(s) below refer to step(s) on the diagnostic table. 3. This step checks the continuity. 5. This step checks the speed sensor. Conditions for Setting the DTC • The wiring circuit for speed sensor shorted to ground or opened. • The reference voltage circuit is shorted to ground or opened.
Action Taken When the DTC Sets The TOD will illuminates 4WD CHECK indicator and DTC is stored in TOD. The TOD then responds as follows: • If the system is in high range the TOD uses the rear speed sensor to determine the EMC touch off level and wheel slip control is suspended. • If the system is in low range, the EMC duty cycle is set to maximum, independent of vehicle speed, until the system is shifted out of low range. • All electric shift activity is halted until the Ignition is cycled. If a shift is in progress it will be completed. SSANGYONG Y200 Step Action Value Yes No 1 Was the TOD Diagnostic System Check performed? - Go to Step 2 Go to “TOD Diagnostic System Check” 2 1.
Turn the ignition switch to OFF. 2. Connect a scan tool to the data link connector (DLC) and follow the directions given in the scan tool manual. 3. Turn the ignition switch to ON. 4. Request DTC with scan tool. Is the DTC 1735 also shown? - Go to “DTC 1735 – Speed Sensor Reference Voltage Low” Go to Step 3 3 1. Turn the ignition switch to OFF. 2. Disconnect 18-pin connectors of the transfer case control unit (TOD) and white 7-pin connector, for propeller shaft speed sensor and clutch coil, located under the body. 3. Measure the resistance between terminals B6 and terminals of the 7-pin connector. 4. Measure the resistance between terminals B6 and ground.
Is measured value equal to specified range? 0 Ω ∞ Go to Step 5 Go to Step 4