Combustion Type Power Heater System Diagnostic Trouble Code Chart - Toyota Avensis ZZT251 2003 Service And Repair Manual

5. DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for the code in the table below
and proceed to the appropriate page.
DTC No.
000 No malfunction
010 Overvoltage shutoff
011 Undervoltage shutoff
012 Overheating
Possible overheating detected
014
(Hardware threshold value)
Overheating detected
017
(Hardware threshold value)
020 Glow plug break
021 Glow plug output overload
Combustion air blower motor
030
EMF outside perm. range.
031 Combustion air blower motor break
032 Combustion air blower motor short–circuit
047 Metering pump short–circuit
048 Metering pump break
051 Cold blow time exceeded
052 Safety time exceeded
054 Flame cutout, High setting
056 Flame cutout, LOW setting
060 Temperature control sensor break
061 Temperature control sensor short–circuit
064 Flame sensor break
065 Flame sensor short–circuit
AVENSIS REPAIR MANUAL (RM1018E)
HEATER & AIR CONDITIONER
Description of fault
http://vnx.su
– COMBUSTION TYPE POWER HEATER SYSTEM
Voltage between 1 and 5 at connector A > 16 V
Voltage between 1 and 5 at connector A < 10.2 V
(Voltage values must be present > 20 seconds)
Check battery, regulator and electrical leads.
Check temperature at temperature or overheating sensor >
125 _C
Check water circuit.
Difference of measured values at temperature sensor > 15 _C
(min. 70 _C water temperature and metering pump in opera-
tion);
Check temperature sensor and overheating sensor, replace if
necessary.
Temperature at temperature or overheating sensor > 130 _C,
emergency OFF if DTC No. 012 or 014s not applicable;
Check water circuit, temperature sensor and overheating sen-
sor, replace if necessary.
Check glow plug, replace if necessary.
Check glow plug, replace if necessary.
Blower impeller or burner motor fammed (frozen solid, dirty,
etc.)
Remedy jam, replace burner motor if necessary.
Check the lead to combustion air motor (burner motor) for
continuity, replace if necessary.
Check combustion air blower motor (burner motor), replace if
necessary.
Check supply lead (chafed, etc.).
Check the supply lead to metering pump for short–circuit,
check metering pump, replace if necessary.
Check the supply lead to metering pump for continuity, remedy
break, replace metering pump if necessary.
At start, if flame sensor above 70 _C, > 240 sec.;
Check exhaust gas combustion air supply, check flame sen-
sor, replace if necessary.
When all perm. start attempts used up;
Check the fuel delivery and fuel supply.
Check exhaust gas and combustion air ducts.
Check the fuel delivery and fuel supply.
Check exhaust gas combustion air ducts. Check exhaust gas combustion air ducts.
If combustion OK Check the flame sensor, replace if neces-
sary.
Check connecting leads.
Resistance value between 2 and 10 connector B > 2 Mf (if
break)
Check connecting leads.
Resistance value between 2 and 10 at connector B < 2 Mf (If
short– circuit)
Check connecting leads.
Resistance value between 7 and 14 at connector B > 3,040 f
(If break)
Check connecting leads.
Resistance value between 7 and 14 at connector B > 780 f (If
short–circuit)
Comment / Remedy
–
55–17