Auxiliary Heating: Diagnosis — Jaguar X-type I (2001-2009)

Auxiliary Heating: Diagnosis Jaguar X-type I

Inspection and Verification

Verify the customer concern.
Visually inspect for obvious signs of mechanical or electrical damage. MATERIAL SPECIFICATION CHART Mechanical Electrical Coolant level Heater unit and connections Fuses Relays Harnesses Connectors ECM Cylinder head temperature (CHT) sensor Charging system
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
If the cause is not visually evident, verify the symptom and refer to the «DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-209468-S17286510282005120900000) .

DTC	Description	Possible causes	Action
P0380	Auxiliary heater circuit(s)	Auxiliary heater relay circuit Auxiliary heater control circuit	For auxiliary heater circuit tests. GO to Pinpoint Test G457389p1: AUXILIARY HEATER RELAY 1 .
P1543	Auxiliary heater 1 circuit	Auxiliary heater 1 relay circuit Auxiliary heater 1 control circuit	For auxiliary heater 1 circuit tests. GO to Pinpoint Test G457389p2: AUXILIARY HEATER RELAY 2 .
P1544	Auxiliary heater 2 circuit	Auxiliary heater 2 relay circuit Auxiliary heater 2 control circuit	For auxiliary heater 2 circuit tests. GO to Pinpoint Test G457389p3: AUXILIARY HEATER CIRCUIT TESTS .
B2449	Auxiliary heater short circuit	Auxiliary heater circuit: short circuit to ground	For auxiliary heater circuit tests. GO to Pinpoint Test G457389p1: AUXILIARY HEATER RELAY 1 . GO to Pinpoint Test G457389p2: AUXILIARY HEATER RELAY 2 . GO to Pinpoint Test G457389p3: AUXILIARY HEATER CIRCUIT TESTS .
B2450	Auxiliary heater interrupted	Auxiliary heater circuit: open circuit	For auxiliary heater circuit tests. GO to Pinpoint Test G457389p1: AUXILIARY HEATER RELAY 1 . GO to Pinpoint Test G457389p2: AUXILIARY HEATER RELAY 2 . GO to Pinpoint Test G457389p3: AUXILIARY HEATER CIRCUIT TESTS .

DIAGNOSTIC TROUBLE CODE (DTC) INDEX

Verify the customer concern.
Visually inspect for obvious signs of mechanical or electrical damage. MATERIAL SPECIFICATION CHART Mechanical Electrical Fuel supply Coolant level Pipework Heater unit for damage, etc Blockages/Restrictions to the air flow Fuses Connectors Harness Control module Charging system Fuel fired heater pump
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
If the cause is not visually evident, verify the symptom and refer to the .

DTC	Description	Possible causes	Action
P1937	Fuel fired heater control circuit	Fuel fired heater circuit(s): open circuit Fuel fired heater circuit(s): short circuit to power Fuel fired heater circuit(s): short circuit to ground	For fuel fired heater circuit tests, GO to Pinpoint Test G455141p1: FUEL FIRED HEATER CONTROL CIRCUIT .

DIAGNOSTIC TROUBLE CODE (DTC) INDEX