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PID/DATA MONITOR AND RECORD [WATER HEATER SYSTEM]

id070200801928

## PID Monitoring Item Table

PID Name (Definition) | Unit/Condition | Condition/Specification (Reference) | Action | Water Heater Unit terminal
--- | --- | --- | --- | ---
CCNTFFH (Number of continuous codes) | - | • DTC is detected: 1-255 • DTC is not detected: 0 | Perform inspection using appropriate DTC. | -
ECT (Engine coolant temperature) | °C | °F | • ECT 20 °C {68 °F}: 20 °C {68 °F} • ECT 60 °C {140 °F}: 60 °C {140 °F} | - | -
VPWR_FFH (Module supply voltage) | V | • Ignition switch ON: B+ | Inspect water heater unit power supply terminal. | A
VPWR_LMT (Low voltage threshold) | V | • Ignition switch ON: approx. 9.5 V | Inspect water heater unit power supply terminal. | A
FAN (Fan control) | % | • Blower fan is not operating: 0 % • Blower fan is operating: 0-100 % | - | -
GPD (Glow plug duty cycle) | % | • Water heater unit is not operating: 0 % • Water heater unit is operating: 0-100 % | - | -
BLOWRMTR (Blower motor) | On/Off | • Blower fan is not operating: Off • Blower fan is operating: On | - | -
FP (Fuel pump) | On/Off | • Water heater unit is not operating: Off • Water heater unit is operating: On | - | -
WATER_PMP (Water pump) | On/Off | • Water heater unit is not operating: Off • Water heater unit is operating: On | - | -
GLOW PLUG (Glow plugs) | On/Off | • Water heater unit is not operating: Off • Water heater unit is operating: On | - | -
COMB_FAN (Combustion air fan) | On/Off | • Water heater unit is not operating: Off • Water heater unit is operating: On | - | -
LOCKPUT (Heater lockout) | Lock/Unlock | • Water heater unit is not operating: Lock • Water heater unit is operating: Unlock | - | -
FS (Flame sensor) | On/Off | • Water heater unit is not operating: Off • Water heater unit is operating: On | - | -
HEATER (Heater status) | Inactive/Active | • Water heater unit is not operating: Inactive • Water heater unit is operating: Active | - | -
HEATER_SW (Heater activation switch) | Inactive/Active | • Water heater unit is not operating: Inactive • Water heater unit is operating: Active | - | -

## Simulation Test Item Table

Item | Definition | Operation | Water Heater Unit terminal
--- | --- | --- | ---
CLR_LOCKOUT | Heater lockout mode clearing command | On/- | -
FUEL_PRIME | Fuel pump priming command (The fuel pump is activated for 5 s.) | On/- | -