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 abswebdb cic12244
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DI-268
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI6CI-03
DTC C1224 / 44 NE Signal Circuit
CIRCUIT DESCRIPTION
The ABS & BA & TRAC & VSC ECU receives engine revolution speed signals (NE signals) from the ECM.
DTC No. DTC Detecting Condition Trouble Area
When either the condition 1. or 2. is detected:
1. At vehicle speed of 30 km/h (19 mph) or more, and
when data received from the ECM is in normal condition,
and open or short circuit for engine revolution signal S NEO circuit
C1224 / 44 circuit continues for 10 sec. or more. S ECM
2. While TRAC is operating, the conditions that open or S Skid control ECU
short circuit in engine revolution signal circuit is de-
tected, main throttle opening degree is 0 and IDL switch
is OFF continue for 0.24 sec. or more.
WIRING DIAGRAM
ECM Skid Control ECU
8 2
V-W
NEO E12 V19 NEO
F05504
2002 4RUNNER (RM887U)
Author : Date : 444
DI-269
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
INSPECTION PROCEDURE
1 Check for open and short circuit in harness and connector between terminal
NEO of skid control ECU and terminal NEO of ECM (See page IN-28 ).
NG Repair or replace harness and connector.
OK
2 Check voltage between terminal NEO of skid control ECU and body ground.
ON
PREPARATION:
V19
Remove the skid control ECU with the connectors still con-
2
nected.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminal NEO (V19 - 2) of the
skid control ECU and body ground for the engine condi-
tions below.
F13774 OK:
Engine condition Voltage
OFF (IG ON) 3 - 6 V or below 1 V
ON (Idling) 3 - 6 V below 1 V (Pulse)
(Reference)
3-6V
Below 1 V
F03007
NG Check and replace skid control ECU or ECM.
OK
If the same codes is still output after the DTC is deleted, check the contact condition of each con-
nection.
2002 4RUNNER (RM887U)
Author : Date : 445
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