P1818 ACTUATOR POSITION SWITCH

1 P1818 ACTUATOR POSITION SWITCHD escriptionThe ACTUATOR POSITION SWITCH detects the current ACTUATOR motor range. DTC P1818 will set if either of the following occur: Improper signal from ACTUATOR POSITION SWITCH is input due to open or short circuit. Malfunction is detected in ACTUATOR POSITION SWITCH . DTC LogicDTC DETECTION LOGICDTC REFERENCE CHARTDTC CONFIRMATION PROCEDURE1. DTC CONFIRMATION PROCEDURE 1. Turn ignition SWITCH ON. 2. Perform self-diagnosis. Is DTC P1818 detected?Yes: Perform diagnosis procedure. Refer to "DIAGNOSIS PROCEDURE".No: Inspection Procedure1. CHECK ACTUATOR POSITION SWITCH SIGNAL With CONSULT-III1. Start engine. 2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-III. 3. Read out the value of "SHIFT POS SW1" and "SHIFT POS SW2". DATA MONITOR MODE REFERENCE CHARTDTCCONSULT-IIID iagnostic item is detected [ P1818 ]SHIFT ACT POSI SW Improper signal from ACTUATOR POSITION SWITCH is input due to open or short circuit.

2 Malfunction is detected in the ACTUATOR POSITION SWITCH . Monitored itemConditionDisplay value2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - Pathfinder2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 1 2011 Mitchell Repair Information Company, LLC. Wednesday, September 2, 2015 04:54:39 PMPage 1 2011 Mitchell Repair Information Company, LLC. Without CONSULT-III1. Start engine. 2. Check voltage between transfer control unit harness connector terminal and ground. VOLTAGE SPECIFIED CONDITIONSFig. 44: Identifying Voltage Between Transfer Control Unit Harness Connector terminal And GroundCourtesy of NISSAN MOTOR CO., or NGSHIFT POS SW1 Vehicle stopped Engine running A/T selector lever "N" POSITION Brake pedal depressed 4WD shift SWITCH : 4 LOON4WD shift SWITCH : 2WD, AUTO or 4 HOFFSHIFT POS SW2 Vehicle stopped Engine running A/T selector lever "N" POSITION Brake pedal depressed 4WD shift SWITCH : 4H, AUTO or 2 WDON4WD shift SWITCH : 4 LOOFFC onnectorTerminalConditionVoltage (Approx.)

3 M15327 -Ground Vehicle stopped Engine running A/T selector lever "N" POSITION Brake pedal depressed 4WD shift SWITCH : 4H, AUTO or 2WD0V4WD shift SWITCH : 4 LOBattery voltage44 -Ground Vehicle stopped Engine running A/T selector lever "N" POSITION Brake pedal depressed 4WD shift SWITCH : 4LO0V4WD shift SWITCH : 2WD, AUTO or 4 HBattery voltage2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 2 2011 Mitchell Repair Information Company, LLC. OK: GO TO : GO TO CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH 1. Turn ignition SWITCH "OFF". (Stay for at least 5 seconds.) 2. Disconnect transfer control unit harness connector and the transfer control device ( ACTUATOR POSITION SWITCH ) harness connector. 3. Check continuity between the following terminals.

4 Transfer control unit harness connector M153 terminal 27 and transfer control device ( ACTUATOR POSITION SWITCH ) harness connector F58 terminal 23. Transfer control unit harness connector M153 terminal 44 and transfer control device ( ACTUATOR POSITION SWITCH ) harness connector F58 terminal 20. Continuity should 45: Identifying Continuity Between Transfer Control Unit And ACTUATOR POSITION SWITCH Connector TerminalsCourtesy of NISSAN MOTOR CO., check harness for short to ground and short to or NGOK: GO TO : Repair or replace damaged CHECK GROUND CIRCUIT 1. Turn ignition SWITCH "OFF". (Stay for at least 5 seconds.) 2. Disconnect transfer control device ( ACTUATOR POSITION SWITCH ) harness connector. 3. Check continuity between transfer control device ( ACTUATOR POSITION SWITCH ) harness connector F58 terminal 22 and ground. Continuity should check harness for short to Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 3 2011 Mitchell Repair Information Company, LLC.

5 OK or NGOK: GO TO : Repair open circuit or short to power in harness or 46: Identifying Continuity Between Transfer Control Device Connector F58 terminal 22 And GroundCourtesy of NISSAN MOTOR CO., CHECK ACTUATOR POSITION SWITCH 1. Remove transfer control device. Refer to "REMOVAL AND INSTALLATION". 2. Check operation by applying battery voltage to transfer control device ( ACTUATOR motor) terminals 21 and 24. CONTINUITY CONDITIONSFig. 47: Identifying ACTUATOR Motor OperationCAUTION: Do not operate ACTUATOR motor for more than 1 second. Change the ACTUATOR motor POSITION to "HIGH" when installing. Be careful not to overheat the harness. TerminalContinuityContinuity24 (Battery voltage) - 21 (Ground)20 - 22 YES22 - 23NO21 (Battery voltage) - 24 (Ground)22 - 23 YES20 - 22NO2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 4 2011 Mitchell Repair Information Company, LLC.

6 Courtesy of NISSAN MOTOR CO., or NGYes: GO TO : Replace transfer control CHECK TRANSFER CONTROL UNIT Check transfer control unit input/output signal. Refer to "REFERENCE VALUE".OK or NGOK: GO TO : Check transfer control unit pin terminals for damage or loose connection with harness any items are damaged, repair or replace damaged CHECK DTC Perform the self-diagnosis, after driving a vehicle for a or NGOK: Inspection : Replace transfer control Inspection1. Remove transfer control device. Refer to "REMOVAL AND INSTALLATION". 2. Check operation by applying battery voltage to transfer control device ( ACTUATOR motor) terminals 21 and 24. CONTINUITY CONDITIONSCAUTION: Do not operate ACTUATOR motor for more than 1 second. Change the ACTUATOR motor POSITION to HIGH when installing. Be careful not to overheat the harness.

7 TerminalContinuityContinuity24 (Battery voltage) - 21 (Ground)20 - 22 Yes22 - 23No21 (Battery voltage) - 24 (Ground)22 - 23 Yes20 - 22No2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 5 2011 Mitchell Repair Information Company, LLC. Fig. 48: Identifying ACTUATOR Motor OperationCourtesy of NISSAN MOTOR CO., the inspection results are abnormal replace transfer control device ( ACTUATOR motor). 2008 Nissan Pathfinder SE2008 TRANSMISSION Transfer (ATX14B) - PathfinderWednesday, September 2, 2015 04:54:35 PMPage 6 2011 Mitchell Repair Information Company, LLC.