![Toyota 2003 COROLLA Скачать руководство пользователя страница 247](http://html.mh-extra.com/html/toyota/2003-corolla/2003-corolla_repair-manual-supplement_1141625247.webp)
05--146
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
COROLLA Supplement (RM1129E)
DTC
P1229
FUEL PUMP SYSTEM
DTC
P1272
FUEL PRESSURE REGULATOR SYSTEM
MALFUNCTION
CIRCUIT DESCRIPTION
Refer to DTC P0089 on page 05 -- 52
DTC No.
DTC Detection Condition
Trouble Areas
P1229
When common rail internal pressure is regulated using fuel
metering unit, it does not reach target pressure level or it ex-
ceeds target level by too much
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Supply pump (fuel metering unit)
S
Short in supply pump (fuel metering unit) circuit
S
Open in pressure regulator valve circuit
S
Pressure regulator valve
S
Fuel filter element is clogged
S
Fuel leak
S
Injector
S
Lack of fuel
S
ECM
P1272
When common rail internal pressure is regulated using pres-
sure control valve, it does not reach target pressure level or it
exceeds target level by too much
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Supply pump (fuel metering unit)
S
Short in supply pump (fuel metering unit) circuit
S
Open in pressure regulator valve circuit
S
Pressure regulator valve
S
Fuel filter element is clogged
S
Fuel leak
S
Injector
S
Lack of fuel
S
ECM
HINT:
S
DTC P1299 is set when the vehicle is driven (including acceleration and deceleration) at vehicle speed
of over 50 km/h for more than 5 minutes, while the fuel temperature is more than 10
_
C and the engine
coolant temperature is higher than the fuel temperature.
S
DTC P1272 is set when the vehicle is driven (including acceleration and deceleration) at vehicle speed
of over 50 km/h for more than 5 minutes, while the fuel temperature is more than 10
_
C and the engine
coolant temperature is higher than the fuel temperature.
S
DTCs P1299 and/or P1272 may be set if the vehicle is driven with insufficient fuel.
S
With cold engine, the internal pressure of the common rail is regulated by the pressure regulator valve.
With warm engine, it is regulated by the fuel metering unit.
S
When DTC P1229 and/or P1272 is set, check the internal fuel pressure of the common rail by selecting
the following menu items on the intelligent tester ll: Powertrain / Engine and ECT / Data List / Common
Rail Pressure.
Reference:
Engine Speed
Fuel Pressure (MPa)
Idling
Approximately 25 to 36
2,000 rpm (No engine load)
Approximately 27 to 46
3,000 rpm (No engine load)
Approximately 34 to 69
05MS9--01
To Alphabetical Index
To Sub Index
TOYOTA COROLLA REPAIR MANUAL SUPP 1129E