For a complete wiring diagram Refer to Section 8W.When Monitored:With the ignition on. Battery voltage between 9.0 and 16.0 voltsSet Condition:The TIPM detects 5.0 volts on the Transfer Case Range Position Sensor Signal circuit for 2.0 seconds when voltage should not be present.Possible Causes(T313) MODE SENSOR SIGNAL CIRCUIT OPEN(K91) SENSOR GROUND CIRCUIT OPEN(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGETRANSFER CASE (4WD) SWITCHTOTALLY INTEGRATED POWER MODULE (TIPM)1. T-CASE POSITION SENSOR VOLTAGE ABOVE 4.8 VOLTSIgnition on, engine not running.With the scan tool under TIPM, read the T-Case Position sensor voltage.Is the voltage above 4.8 volts?YesGo To 2 NoGo To 72. (T313) MODE SENSOR SIGNAL CIRCUIT VOLTAGE

Turn the ignition off to the lock position.Disconnect the Transfer Case (4WD) Switch harness connector.Ignition on, engine not running.Measure the voltage of the (T313) Mode Sensor Signal circuit and the (K91) Sensor Ground at the Transfer Case (4WD) Switch harness connector.Is the voltage between 4.8 and 5.2 volts?YesReplace the Transfer Case (4WD) Switch in accordance with the Service Manual.Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) No Go To 33. (T313) MODE SENSOR SIGNAL CIRCUIT OPEN

Turn the ignition off to the lock position.Disconnect the TIPM C1 harness connector.Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case (4WD) Switch harness connector and the TIPM C1 harness connector.Is the resistance above 5.0 ohms?YesRepair the (T313) Mode Sensor Signal circuit for an open.Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) NoGo To 44. (K91) SENSOR GROUND CIRCUIT OPEN

Measure the resistance of the (K91) Sensor Ground circuit between the Transfer Case (4WD) Switch harness connector and the TIPM C1 harness connector.Is the resistance above 5.0 ohms?YesRepair the (K91) Sensor Ground circuit for an open.Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) NoGo To 55. (T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE

Ignition on, engine not running.Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case (4WD) Switch harness connector.Is the voltage above 0.2 volts?YesRepair the (T313) Mode Sensor Signal circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) NoGo To 66. (K91) SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE

Measure the voltage of the (K91) Sensor Ground circuit at the Transfer Case (4WD) Switch harness connector.Is the voltage above 0.2 volts?YesRepair the (K91) Sensor Ground circuit for a short to voltage. Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) NoReplace the Totally Integrated Power Module in accordance with the Service Information.Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) 7. INTERMITTENT WIRING AND CONNECTORSThe conditions necessary to set this DTC are not present at this time.Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.Look for the data to change or for the DTC to reset during the wiggle test.Were any problems found?YesRepair as necessary.Perform the TRANSFER CASE VERIFICATION TEST.(Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE) NoTest complete.