Component Mechanical Or Electrical Problems; Fuel Nozzle; Fuel Solenoid Valve; Fuel Regulator - Proheat M50 G-II PCM Service Manual

4-36
4.2 COMPONENT MECHANICAL
OR ELECTRICAL PROBLEMS
4.2.1

Fuel Nozzle

4.2.2

Fuel Solenoid Valve

4.2.3

Fuel Regulator

4.2.4

Air Compressor

4.2.5

Fuel Supply Pump

4.2.6

Ignition Electrodes

4.2.7

G-II PCM Fuse

Protects the G-II PCM against high current. When switched on, the PROHEAT
will NOT start, attempt to start, or indicate a diagnostic code.
Troubleshoot a Blown Fuse based on:
1. Voltage supply to the PROHEAT.
2. Voltage at the output connections of the G-II PCM.
Test Procedure – Voltage supply:
a) Disconnect the power harness at the G-II PCM.
b) Using a multimeter set for voltage, measure across pins A and B of the
harness connector for system voltage.
If there is no voltage, check the OEM voltage supply. Consult OEM for
service requirements.
If the correct voltage (system voltage 12 – 24) is measured, go to item 'c'.
PIN B – BLACK (-)
Figure 4-37: Power Harness.
Go to page 4-7, Step 3.
Go to page 4-13, Step 4.
Go to page 4-15, Step 5.
Go to page 4-9, Step 6.
Go to page 4-17, Step 7.
Go to page 4-20.
PIN A – RED (+)
PROHEAT M-SERIES G-II PCM SERVICE MANUAL