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P2118 THROTTLE CONTROL MOTOR EC-369 < DTC/CIRCUIT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O P2118 THROTTLE CONTROL MOTOR Component Description INFOID:0000000007358326 The throttle control motor is operated by the ECM and it opens and closes the throttle valve. The current opening angle of the throttle valve is detected by the throttle position sensor.The throttle position sensor provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions via the throttle control motor. On Board Diagnosis Logic INFOID:0000000007358327 This self-diagnosis has the one trip detection logic. FAIL-SAFE MODE When the malfunction is detected, the ECM enters fail-safe mode and the MIL illuminates. DTC Confirmation Procedure INFOID:0000000007358328 1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con- ducting the next step. a. Turn ignition switch OFF and wait at least 10 seconds. . Diagnosis Procedure INFOID:0000000007358329 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. Refer to OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT DTC No. Trouble diagnosis name DTC detecting condition Possible cause P2118 Throttle control motor ECM detects short in both circuits between • Harness or connectors (Throttle control motor circuit is shorted.) • Electric throttle control actuator (Throttle control motor) Engine operating condition in fail-safe mode ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return BBIA0539E August 2012 2012 Pathfinder |