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DTC P1226: MECHANICAL GUARD CIRCUIT RANGE Jaguar XJR II

Testing & Diagnostics ~131 words
  1. Check throttle input shaft operation and spring return. Repair as necessary. If throttle input shaft function is okay, go to next step.
  2. Disconnect 5-pin pedal position and mechanical guard sensor harness connector. Turn ignition on. Measure voltage between harness connector terminals No. 2 (Black/Green wire) and No. 4 (Blue/White wire). (Схема №4) If voltage is 4.75-5.25 volts, system is okay. If voltage is not 4.75-5.25 volts, go to next step.
  3. Turn ignition off. Disconnect ECM harness connector EM11. Check continuity of Black/Yellow wire between ECM harness connector EM11 terminal No. 13 and 5-pin pedal position and mechanical guard sensor harness connector terminal No. 1. (Схема №3) If continuity exists, system is okay. If continuity does not exist, repair open in Black/Yellow wire and retest system.

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