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Home >> Jaguar >> 2009 >> XJR >> Repair and Diagnosis >> Engine Performance >> System >> Acceleration Control (2003.5-09) >> Diagnosis and Testing >> Acceleration Control >> PINPOINT TEST G240070p4 : DTC P1251, P1658, P1631, P1657 >> G240070t20 : CHECK THE THROTTLE MOTOR RELAY POWER SUPPLY CIRCUIT

G240070t20 : CHECK THE THROTTLE MOTOR RELAY POWER SUPPLY CIRCUIT

  1. Remove the throttle motor relay.
  2. Measure the voltage between the throttle motor relay connector FH 32D pin 3 (YR) and ground.
    • Is the voltage less than 10 volts? 
  1. -> Yes :  REPAIR the throttle motor relay power supply circuit. CLEAR the DTC. TEST the system for normal operation.
  2. -> No :  INSTALL a new throttle motor relay. CLEAR the DTC. TEST the system for normal operation.
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