P1124 INFINITI, NISSAN - THROTTLE CONTROL MOTOR RELAY CIRCUIT SHORT
POST UPDATED IN June, 2023
P1124 INFINITI, NISSAN - THROTTLE CONTROL MOTOR RELAY CIRCUIT SHORT
The throttle control motor power supply is provided to the ECM (Engine Control Module) by a throttle control motor relay, which is energized and de-energized as commanded by the ECM. When the ignition switch is placed in the on position, the Engine Control Module sends an ignition signal to the relay and along with this, a battery voltage is given to the ECM. Once the ignition switch turns off the relay is commanded to turn off accordingly and no battery voltage is sent.
When the throttle control motor relay circuit exhibits erratic operation, a series of fault codes will be set. In the case of the P1124 OBDII code, it is a manufacturer-specific code, and for Nissan and Infiniti it means that the circuit is shorted.
The reasons why the P1124 OBD2 diagnostic code is set are:
The steps to correct the DTC P1124 OBDII code are as follows: