Indicator Does Not Glow, Engine Won't Start

CHECKING MAIN POWER CIRCUIT OF PREGLOW SYSTEM FOR OPEN CIRCUIT

Problem:
Preglow indicator lamp fails to light up, engine cannot be started.





- Using the multimeter volt measuring range, check the voltage on terminal 30 of the preglow time relay against ground (arrow).

- If no voltage is present, check 4 mm red wire from the terminal block X36 terminal 30 to the preglow time relay terminal 30 for open circuit and eliminate open circuit.

- If no fault was established to this point, measure voltage on jack 1 of the 6-pin coupling of the preglow time relay against ground.

MODEL 201

- If no voltage is present with the preglow system switched on, check red/black wire from the central electrical coupling S jack 4 to the coupling jack 1 of the preglow time relay for open circuit and eliminate open circuit.





- If voltage is present, connect multimeter volt measuring range to jack 1 (terminal 15) and jack 4 (terminal 31) and measure voltage.

- If no voltage is indicated, check brown wire from jack 4 to ground for open circuit and eliminate open circuit.

- If no fault was established to this point, the preglow time relay is defective, replace preglow time relay.