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Is a voltage measured? LOCATE and RECTIFY the short to voltage in circuit No GO to P13 . P13: CHECK THE CIRCUIT BETWEEN THE ELECTRIC BOOSTER HEATER AND THE GEM Ignition switch in position 0. 1 Measure the resistance between the electric booster (BU/GN), wiring harness side and ground. 2 Is a resistance of more than 10,000 Ohms measured? RENEW the electric booster heater. CHECK the No LOCATE and RECTIFY the short to ground in circuit PINPOINT TEST Q : PROGRAMMABLE FUEL-FIRED BOOSTER HEATER NOTE: The fuel fired booster heater is equipped with an integrated undervoltage TEST CONDITIONS DETAILS/RESULTS/ACTIONS Q1: CHECK FUSE F277 Ignition switch in position 0. 1 CHECK F27 (EJB). 2 Is the fuse OK? GO to Q2 . No RENEW fuse F27 (30 A). CHECK the operation of the
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