VOLTAGE: Step 2
(5 Flashes)
VOLTAGE Diagnostic Code 5
Indicates that the supply voltage to the G-II PCM is outside the operating
range for more then 10 seconds.
Operating Range:
•
12 volt PROHEAT – 10 to 16 volts.
•
24 volt PROHEAT – 18 to 32 volts.
Troubleshoot the Voltage diagnostic code based on:
1.
Low voltage.
•
Voltage supply is below the rated requirement.
•
Poor or faulty electrical connections.
•
Voltage supply source is OK. Voltage drop due to high amperage load
while the PROHEAT is operating or trying to operate.
2.
High voltage.
•
Voltage supply is above the rated requirement while the vehicle
engine is running.
High Voltage – Check:
The vehicle charging system. Consult the OEM for service requirements.
Low Voltage – Check:
a)
System voltage supply source.
b)
Wiring harnesses and connection points.
Procedure – Low voltage testing:
a)
Inspect the wiring harnesses and connections for corrosion and proper
fit. Clean if necessary.
b)
Using a multimeter set for voltage, measure across the positive and
negative battery terminals or at the supply source.
If the voltage is below the required voltage, service the batteries and/or
charging system as per OEM supplier recommendations.
If the voltage level is within the operating range, go to item 'c'.
4.1.6
(5 Flashes)
VOLTAGE: Step 1
(5 Flashes)
Figure 4-27: Voltage Measurement.
TO PROHEAT
4-26
PROHEAT M-SERIES G-II PCM SERVICE MANUAL
Summary of Contents for M105 G-II PCM
Page 7: ...PROHEAT M SERIES G II PCM SERVICE MANUAL B 2 ...
Page 11: ...PROHEAT M SERIES G II PCM SERVICE MANUAL D 2 ...
Page 25: ...PROHEAT M SERIES G II PCM SERVICE MANUAL 1 12 ...
Page 35: ...2 10 PROHEAT M SERIES G II PCM SERVICE MANUAL ...
Page 77: ...PROHEAT M SERIES G II PCM SERVICE MANUAL 4 40 ...
Page 89: ...6 2 PROHEAT M SERIES G II PCM SERVICE MANUAL ...
