P1705

DTC P1705
High/Low range sensing.

Possible causes by suggested order of priority:
- Range switch not operating.
- Open circuit C685/2 (B) to vehicle earth.
- Open circuit C685/1 (RK) to C193/13 (RK).
- connectors EAT C193, C685.
- Range switch faulty

Range switch not operating.
- Use Live Data reading to display the position of the range switch currently being read by the transmission ECU.
CHECK THE FOLLOWING:
- Move the range switch between high and low range and check if the display changes correctly.
POSSIBLE FAULTS
- Range switch not operating correctly.
- Range switch circuit fault

Open circuit C685/2 (B) to vehicle earth.
Check resistance > 1M Ohm

Open circuit C685/1 (RK) to C193/13 (RK).
- Check resistance > 1M Ohm

connectors EAT C193, C685.
- Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

Range switch faulty
CHECK THE FOLLOWING:
- Check the range switch is correctly set so that it closes when in the low range position.
- Check that the switch has a low resistance in low range and a high resistance in the high range position.
- The switch should be tested using a multimeter or suitable test equipment.
POSSIBLE FAULTS
- Range switch incorrectly set.
- Range switch fault.