Page 761 of 5135
A80999
EDU
1 R±L
PRDECM
E1332
1
EA1 PRDR±L
E54
W
PRVE58
B
COM3
E472 P3
Pressure Discharge Valve
W
B 2
EA1
(Shielded) (Shielded)
BR
BR
BR
EIJ12D
J12E
J13D J13E J/C
A81507
ECMEDU
PRD
Pressure
Discharge
Valve
INJFCOM3 A
PRD
IJFPRV B
C
D
Warning: Terminals COM3 and PRD are high±voltage
High±voltage Area
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±667
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
PULSE GENERATION INSPECTION
HINT:
Problem area can be identified by inspecting waveform at the following inspection points.
HINT:
Inspect the following inspection points ºA and Dº or ºB and Cº at the same time.
Malfunction pointTrouble area
AECM
B (If A is normal)Open or short in ºPRD (ECM)º ± ºPRD (EDU)º circuit.
C (If A and B are normal)
Open or short in ºPRV (EDU)º ± ºCOM3 (EDU)º circuit.
Pressure discharge valve
EDU
D (If A, B and C are normal)Open or short in ºIJF (EDU)º ± ºINJF (ECM)º circuit. (P0200 is set simultaneously)
Page 762 of 5135
A81513
5 V/
Division
20 msec./Division PRDSignal Waveform
A82882
5 V/
Division
20 msec./Division INJFSignal Waveform
05±668
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
(a) Reference: Inspect using the oscilloscope.
The correct waveform is as shown in the diagram on the
left.
Inspection pointSpecified condition
A and BCorrect waveform is as shown
(b) Reference: Inspect using the oscilloscope.
The correct waveform is as shown in the diagram on the
left.
Inspection pointSpecified condition
C and DCorrect waveform is as shown
INSPECTION PROCEDURE
HINT:
After completing repair, confirm P1271 and/or P1272 is not set again.
If P0200 and P1271 are present simultaneously, there is open in the INJF wire harness between the
EDU and ECM, or there is open in the wire harness for both of the injector the pressure discharge valve.
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle
was running or stopped, the engine was warmed up or not, etc. at the time of the malfunction.
1 READ OUTPUT DTC(DTC P1271 AND/OR P1272)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch ON.
(c) Select the item ºDIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODESº.
(d) Read the DTCs.
Result:
Display (DTC output)Proceed to
ºOnly DTC P1271º or ºP1271 and P1272º are outputA
Only DTC P1272 is outputB
B Go to step 8
A
Page 763 of 5135
A82883
Pressure Discharge Valve
A81461
E4
Wire Harness SideEDU Connector COM3
A81462
E5
Wire Harness Side
EDU Connector PRV
A81694
P3
Wire Harness Side
Pressure Discharge valve
Connector
#G COMG
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±669
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT COMMON RAIL ASSY (PRESSURE DISCHARGE VALVE)
(a)Check the pressure discharge valve for resistance. (1)Measure the resistance between the terminals.
Resistance: 0.85 to 1.05 at 20 C (68 F)
NGREPLACE COMMON RAIL ASSY (PRESSURE DISCHARGE VALVE)
(See page 14±286)
OK
3 CHECK HARNESS AND CONNECTOR(PRESSURE DISCHARGE VALVE ± EDU)
(a) Disconnect the E4 and E5 EDU connectors.
(b) Disconnect the P3 pressure discharge valve connector.
(c) Check for continuity between the wire harness side con- nector.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
COM3 (E4±7) ± COMG (P3±2)ContinuityPRV (E5±8) ± #G (P3±1)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
COM3 (E4±7) or COMG (P3±2) ± Body groundNo continuityPRV (E5±8) or #G (P3±1) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
Page 764 of 5135
A81462
E5
Wire Harness Side
EDU ConnectorPRD
A81089ECM Connector E13
PRD
A56874
E4
Wire Harness Side
EDU ConnectorBATTERY (+)
A80994
E5
Wire Harness Side
EDU Connector GND (±)
05±670
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK HARNESS AND CONNECTOR(EDU ± ECM)
(a) Disconnect the E5 EDU connector.
(b) Disconnect the E13 ECM connector.
(c) Check for continuity between the wire harness side con-
nector.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
PRD (E5±4) ± PRD±(E13±32)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
PRD (E5±4) or PRD (E13±32) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
5 INSPECT INJECTOR DRIVER(BATTERY VOLTAGE)
(a) Disconnect the E4 and E5 EDU connectors.
(b) Turn the ignition switch ON.
(c) Measure the voltage between the specified terminals of
the EDU connector.
Voltage:
Symbols (Terminal No.)Specified condition
BATTERY (E4±8) ± GND (E5±1)9 to 14 V
NG CHECK INJECTOR DRIVER POWER SOURCE
CIRCUIT (EDU ± BATTERY)
OK
Page 765 of 5135
A66060
E13
ECM Connector
PRD
E1
E12
A81513
5 V/
Division
20 msec./Division
PRD
Signal Waveform
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±671
AVENSIS REPAIR MANUAL (RM1018E)
6INSPECT ECM(PRD VOLTAGE)
(a)Inspect using the oscilloscope.
(b)Drive the vehicle at 50 km/h (31 mph) with the 3rd trans-
mission gear and then decelerate by releasing the accel-
erator pedal, and check the waveform between the speci-
fied terminals of the E12 and E13 ECM connectors.
Standard:
Symbols (Terminal No.)Specified condition
PRD (E13±4) ± E1 (E12±7)Correct waveform is as shown
HINT:
It may be that the following method is the alternative inspection:
Run the engine at 2,500 rpm for 10 seconds and then decrease
to idle speed with accelerator pedal completely released.
NGREPLACE ECM (See page 10±65)
OK
7 REPLACE INJECTOR DRIVER
GO
CHECK DTC OUTPUT RECUR (DTC P1271 AND/OR P1272)
HINT:
P1271:
After clearing the DTC, drive the vehicle at 50 km/h (31 mph) with the 3rd\
transmission gear and then decel-
erate by releasing the accelerator pedal, then confirm P1271 is not set again\
.
P1272:
After clearing the DTC, turn the ignition switch OFF after the engine was sta\
rted, and restart the engine and
then turn the ignition switch OFF, and then confirm P1272 is not set again.
Page 766 of 5135
05±672
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
8READ VALUE OF HAND±HELD TESTER
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Start the engine.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL PRESSº and read its value displayed on the hand±held tester.
(e)Check if the internal fuel pressure of the common rail drops below approximat\
ely 5 MPa within approxi- mately 1 second after the ignition switch is turned OFF at idling.
Result:
Pressure DisplayedProceed to
5 MPa or moreA
5 MPa or lessB
BCHECK DTC OUTPUT RECUR (DTC P1271 AND/ OR P1272)
HINT:
P1271:
After clearing the DTC, drive the vehicle at 50 km/h (31 mph)
with the 3rd transmission gear and then decelerate by releasing
the accelerator pedal, then confirm P1271 is not set again.
P1272:
After clearing the DTC, turn the ignition switch OFF after the en-
gine was started, and restart the engine and then turn the igni-
tion switch OFF, and then confirm P1272 is not set again.
A
9REPLACE COMMON RAIL ASSY(PRESSURE DISCHARGE VALVE)
(See page 11±78)
GO
CHECK DTC OUTPUT RECUR (DTC P1271 AND/OR P1272)
HINT:
P1271:
After clearing the DTC, drive the vehicle at 50 km/h (31 mph) with the 3rd\
transmission gear and then decel-
erate by releasing the accelerator pedal, then confirm P1271 is not set again\
.
P1272:
After clearing the DTC, turn the ignition switch OFF after the engine was sta\
rted, and restart the engine and
then turn the ignition switch OFF, and then confirm P1272 is not set again.
Page 767 of 5135
A80997
S6
Suction Control ValveECM
E132
PCV+
2 1
LG LG±R
PCV± E131
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±655
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0627 FUEL PUMP CONTROL CIRCUIT / OPEN
CIRCUIT DESCRIPTION
DTC No.DTC Detection ConditionTrouble Area
P0627Open or short in suction control valve circuit for more than 0.5
sec. (1 trip detection logic).Open or short in suction control valve circuit
Suction control valve
ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using
. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running
or stopped, the engine was warmed up or not, etc. at the time of the malfunction.
05CPZ±01
Page 768 of 5135
A75346
Suction Control
Valve
A81460
S6
Wire Harness SideSCV Connector
PCV+
PCV±
A81089
PCV+E13
PCV±
ECM Connector
05±656
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK INJECTION OR SUPPLY PUMP ASSY
(a)Check the suction control valve for resistance. (1)Measure the resistance between the terminals.
Resistance: 1.9 to 2.3 at 20 C (68 F)
NGREPLACE INJECTION OR SUPPLY PUMP ASSY (SUCTION CONTROL VALVE)
(See page 11±69)
OK
2 CHECK HARNESS AND CONNECTOR(SUCTION CONTROL VALVE ± ECM)
(a) Disconnect the S6 suction control valve connector.
(b) Disconnect the E13 ECM connector.
(c) Check for continuity between the wire harness side con- nector.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
PCV+ (S6±1) ± PCV+ (E13±2)ContinuityPCV± (S6±2) ± PCV± (E13±1)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
PCV+ (S6±1) or PCV+ (E13±2) ± Body groundNo continuityPCV± (S6±2) or PCV± (E13±1) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS AND CONNECTOR
OK