194002900 - Y060 P1612 - FUEL FILTER HEATER RELAY CONTROL (SC TO +VBAT)

The diagnostic equipment signals: Error P1612 (fuel filter heater relay control), with detail "short circuit to +Vbatt"
This error is detected if there is a short circuit to positive in the circuit connected to Pin 68 of the junction unit for at least 0.3 secs.
1Fuel heating relay checkALL OKPROBLEMS ENCOUNTEREDACTION
Check that the relay for heating the fuel is working properly, by carrying out the testSee Test 5505AC CHECK DIESEL PREHEATING RELAYEnd of diagnosis