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 bcsy ecupwr
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DI-518
DIAGNOSTICS - BODY CONTROL SYSTEM
DI56W-03
CIRCUIT INSPECTION
Power Source Circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the body ECU.
WIRING DIAGRAM
Engine Room R/B Body ECU
13 10
L-R L-R
2 IG1 B16 ECU-B
1 2
MPX-B 9
GR
B16 ACC
Driver Side J/B
1G 11
1 ACC
L-R
1I
J/B 2 POWER
W-R
2 1K POWER
1 2 1 2 3
ALT AM1 HORN HAZ
1 2
I14 HAZ
1 2 7
Ignition 2 WIPER
Switch B-Y
1I WIP
2 2 9
W ECU-IG
3 ECU-IG
2 10
4 8
W 1J GND
8
Center J/B
16 21
W-B
3E 3E
W-B
Battery A
J9
J/C
IF
I10125
2002 4RUNNER (RM887U)
Author : Date : 694
DI-519
DIAGNOSTICS - BODY CONTROL SYSTEM
INSPECTION PROCEDURE
1 Check POWER M-fuse, WIPER, ACC, HORN, HAZ, MPX-B and ECU-IG fuses.
CHECK:
Check the continuity of the POWER M-fuse, the WIPER, ACC, HORN, HAZ, MPX-B and ECU-IG fuses.
OK:
Continuity
NG Replace failure fuse.
OK
2 Check voltage between terminals WIPER, ACC, HORN, HAZ, POWER, ECU-B,
ECU-IG and GND of body ECU connector and body ground.
PREPARATION:
(a) Disconnect the 2 connectors and remove the cover.
(b) Turn the ignition switch ON.
WIPER CHECK:
Measure the voltage between terminals WIPER, ECU-IG and
ECU-IG body ground.
OK:
Voltage: 10 - 14 V
(+) (-)
I09488
PREPARATION:
POWER Turn the ignition switch OFF.
CHECK:
Measure the voltage between terminals HORN, HAZ, POWER
HORN, HAZ and body ground.
OK:
Voltage: 10 - 14 V
(+) (-)
I09490
2002 4RUNNER (RM887U)
Author : Date : 695
DI-520
DIAGNOSTICS - BODY CONTROL SYSTEM
ACC PREPARATION:
Turn the ignition switch ON.
CHECK:
(+)
Measure the voltage between terminal ACC and body ground.
OK:
(-) Voltage: 10 - 14 V
I09491
ECU-B PREPARATION:
Turn the ignition switch OFF.
CHECK:
(+)
Measure the voltage between terminal ECU- B and body
ground.
(-) OK:
Voltage: 10 - 14 V
I22496 NG Proceed to next circuit inspection shown on
problem symptoms table (See page DI-517 ).
OK
3 Check continuity between terminal GND and body ground.
PREPARATION:
Disconnect the 2 connectors and remove the cover.
GND
CHECK:
Check the continuity between terminal GND and body ground.
OK:
Continuity
NG Repair or replace driver side J/B, harness or
connector.
I09489
OK
Replace driver side J/B.
2002 4RUNNER (RM887U)
Author : Date : 696
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