34
Fault Code Chart
Error Code
Description of Error
Diagnostic Instruction & Correct Action & Repair
1
High Voltage
Voltage at main connector pins 4 & 8 must be less than 16.0 volts
Repair vehicle electrical system as required
2
Low Voltage
Voltage at main connector pins 4 & 8 must be more than 10.5 volts
Repair wiring connections or vehicle electrical system as required
3
Fuel Pump
Open Circuit
Check fuel pump wiring connections & resistance across fuel pump terminals
and main harness pins 3 & 7. Should be 7.5-8.5 Ω
Repair wiring or replace fuel pump as required
4
Fuel Pump
Short Circuit
Check fuel pump wiring connections & resistance across fuel pump terminals
and main harness pins 3 & 7. Should be 7.5-8.5 Ω
Repair wiring or replace fuel pump as required
5
Glow Pin
Open Circuit
Check glow pin connectors and resistance across glow pin
Should be 0.8 Ω. Replace glow pin as required.
6
Glow Pin
Short Circuit
Check glow pin connectors and resistance across glow pin
Should be 0.8 Ω. Replace glow pin as required.
7
Blower Motor
Open Circuit
Check blower motor wiring & blower motor for free rotation
Repair wiring or replace blower as required
8
Blower Motor
Short Circuit
Check blower motor wiring
Repair wiring or replace blower as required
9
Flame Extinguished
Refer to Combustion Issues in manual.
10
Failed Ignition
Refer to Combustion Issues in manual.
11
Over Temperature
Check fan operation & for blockage of hot air ducting air flow (in and out)
Check Flame / Overheat sensor resistance. Should be approximately 45 kΩ at
room temp. Replace as necessary
12
Temp Sensor
Open Circuit
Check Flame / Overheat sensor resistance.
Should be approximately 45 kΩ at room temp. Replace as necessary
13
Temp Sensor
Short Circuit
Check Flame / Overheat sensor resistance.
Should be approximately 45 kΩ at room temp. Replace as necessary
14
Communications Error
Check all wiring to heater.
Reboot ECU by removing main fuse for 5 mins. Replace ECU as necessary
