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Does the meter display battery voltage? GO to I4 . No REPAIR the voltage supply to fuse F27 with the aid of I4: CHECK THE VOLTAGE AT THE FUEL-FIRED BOOSTER HEATER / PROGRAMMABLE Disconnect Connector C1HF01-C from the fuel-fired heater. 1 Measure the voltage between the fuel-fired booster connector C1HF01-C, pin 3, circuit SBB27A (BU/RD), 2 Does the meter display battery voltage? GO to I5 . No LOCATE and RECTIFY the break in circuit SBB27A I5: CHECK THE GROUND CONNECTION OF THE FUEL-FIRED BOOSTER HEATER / Measure the resistance between the fuel-fired heater, connector C1HF01-C, pin 4, circuit GD132L 1 Is a resistance of less than 2 Ohms registered? GO to I6 . No LOCATE and RECTIFY the open circuit between the I6: CHECK FOR OPEN CIRCUIT BETWEEN THE FUEL-FIRED BOOSTER HEATER / CAUTION: The following measurement must only be performed using the Ford approved diagnostic tool digital multimeter. Failure to observe this instruction can lead to
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