Indicator Does Not Glow, Engine Won't Start

TESTING MAIN CIRCUIT OF PREGLOW SYSTEM FOR INTERRUPTION





If the following problem occurs:
Preglow indicator lamp does not light up, engine cannot be started.

- With the multimeter set to the Volts range, test the voltage at terminal 30 of the preglow time relay to ground (arrow).

- If no voltage is indicated, test 4 mm red cable from terminal block (X35) terminal 30 to the preglow time relay terminal 30 for open circuit. Rectify open circuit.

- If no fault has been detected to this point, test voltage at contact 1 of the 6-pin connector of the preglow time relay to ground.

MODEL 124

- Test pink/red cable from fuse 7 (unprotected side) through plug connection of engine wiring harness to the connector contact 1 of the preglow time relay for open circuit. Rectify open circuit.

- If voltage is indicated, connect multimeter Volts range to contact 1 (terminal 31) and test voltage. If no voltage is indicated, test brown cable from contact 4 to ground for open circuit. Rectify open circuit. If no fault has been detected to this point, the preglow time relay is defective. Replace preglow time relay.