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 at cip1782
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DI-208
DIAGNOSTICS - AUTOMATIC TRANSMISSION
DI9OB-01
DTC P1782 Transfer L4 SW Circuit Malfunction
CIRCUIT DESCRIPTION
The ECM receive signal L4 from the indicator switch (LOW switch).
DTC No. DTC Detecting Condition Trouble Area
When driving under conditions (a) and (b) for 1.8 seconds or
S Short in transfer L4 position switch (LOW switch) signal cir-
more, the indicator switch (LOW switch) is ON .
cuit
P1782 (1-trip detection logic)
S transfer L4 position switch (LOW switch)
(a) Output shaft speed 3000 rpm or less
S ECM
(b) Transfer shift position is H
WIRING DIAGRAM
4WD
D4 ECM
transfer L4 Position switch 7 J/C 2
B B
W-B W-B L-R L-R
II4 J7 J8 E12 L4
2 1
D5
transfer Neutral Position switch 22 A J/C 11
C
B-R B-R B-R
II4 J7 J8 E12 TFN
W-B 2 1
J8 C
W I14 B-R
Ignition Switch 14
2 C25
2 AM1
Driver Side
2
A/T P
J/B IG1 4 Combination Meter
AM1
B-Y
1
C26 2
2
1I 2 L-Y
ALT
Driver Side J/B
GAUGE
I11 2
1
L-Y
2 1
W P1
1F 7 Park/Neutral
Position Switch
Battery 20 3
B-Y B-Y
II4
D11934
2002 4RUNNER (RM887U)
Author : Date : 384
DI-209
DIAGNOSTICS - AUTOMATIC TRANSMISSION
INSPECTION PROCEDURE
1 Check transfer L4 position switch ( See page TR-1 1).
PREPARATION:
Remove the transfer L4 position switch (See page TR-9 ).
CHECK:
Check that there is continuity between terminals, as shown.
Push
OK:
Switch position Specified condition
Push Continuity
Free No continuity
Ohmmeter
F01140
Q07482 F03418
NG Replace transfer L4 position switch.
OK
2 Check voltage between terminal L4 of ECM and body ground.
ON PREPARATION:
L4 Remove the ECM with connectors still connected.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminal L4 of ECM and body
ground when transfer in L4 position.
(-) (+) OK:
Transfer shift position Voltage (V)
D11998
L Below 1.5
Except L 9 - 14
2002 4RUNNER (RM887U)
Author : Date : 385
DI-210
DIAGNOSTICS - AUTOMATIC TRANSMISSION
OK Proceed to next circuit inspection shown in
problem symptoms chart (See page DI-175 ).
NG
3 Check for open or short circuit in harness and connector between transfer L4
position switch and ECM ( See page IN-28 ).
NG Repair or replace harness or connector.
OK
Check and replace ECM.
2002 4RUNNER (RM887U)
Author : Date : 386
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