Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eg5vzfe cip1127
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DI-1 18
DIAGNOSTICS - ENGINE (5VZ-FE)
DI1M4-14
DTC P1127 ETCS Actuator Power Source Circuit
Malfunction
CIRCUIT DESCRIPTION
Battery positive voltage is supplied to terminal +BM of the ECM even once when the ignition switch is OFF
for the electric ETCS control system.
If this DTC is stored, the ECM shuts down the power for the ETCS motor and the magnetic clutch, and the
ETCS valve is fully closed by the return spring.
However, the opening angle of the ETCS valve can be controlled by the accelerator pedal through the ETCS
cable.
DTC No. DTC Detecting Condition Trouble Area
S Open in ETCS power source circuit
P1127 Open in ETCS power source circuit
S ECM
WIRING DIAGRAM
ECM
Engine Room R/B
ETCS 24 8 +BM
G G
2 2 IG1 E14
1 2
W-R
2 2
W
Battery
A15460
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected. When troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean
or rich, etc. at the time of the malfunction.
2002 4RUNNER (RM887U)
Author : Date : 294
DI-1 19
DIAGNOSTICS - ENGINE (5VZ-FE)
1 Check ETCS fuse.
Engine Room R/B PREPARATION:
Remove the ETCS fuse from the engine room R/B.
CHECK:
Check the countinuity of the ETCS fuse.
OK:
Continuity
ETCS Fuse
A15318
NG Check for short in all harness and components
connected to ETCS fuse.
OK
2 Check voltage between terminal +BM of ECM connector and body ground.
LOCK PREPARATION:
Remove the glove compartment door.
+BM
CHECK:
Measure the voltage between terminal +BM of the ECM con-
nector and body ground.
OK:
(+) (-) Voltage: 9 - 14 V
A15319 OK Check and replace ECM (See page IN-28 ).
NG
Check and repair harness or connector between battery and ETCS fuse, and ETCS fuse and ECM
(See page IN-28 ).
2002 4RUNNER (RM887U)
Author : Date : 295
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