Combustion Type Power Heater System On-Vehicle Inspection - Toyota Avensis ZZT251 2003 Service And Repair Manual

COMBUSTION TYPE POWER HEATER SYSTEM
ON–VEHICLE INSPECTION
NOTICE:
Y
If the glow plug breaks, the ECU detects the breakage and stops the automatic operation, so
the burner heater does not activate. (For other failures, similarly activated.)
Y
The cause of failures (such as voltage malfunction, overheating malfunction, short–circuit or
breakage of functional components, etc.) and repair methods are shown by connecting the DTC
tester and reading the DTC.
1. DIAGNOSTICS FUNCTION
(a) Connect the DTC tester between the connector A (Vehicle harness) of DTC check harness and con-
nector B (Power heater harness).
(b) Start the engine.
(c) Pressing the DTC calling button displays a 3–digit number DTC.
Connector B
DTC Check Harness
()E-F
()E-E ()E-C
AVENSIS REPAIR MANUAL (RM1018E)
HEATER & AIR CONDITIONER
Connector A
Current Display
DTC Calling Button
http://vnx.su
– COMBUSTION TYPE POWER HEATER SYSTEM
DTC Display
Past Record
Control Panel
Memory Clear Button
In Normal
In Malfunction
"Heating"
Symbol
DTC Calling Button
55–15
550ZG–01
I12508