BAT/Brakes, ABS & TRAC Systems — Inspection Procedure, page 148

BR–148
BRAKE SYSTEM – TRACTION CONTROL SYSTEM (TRAC)

INSPECTION PROCEDURE

1  Check for open and short in harness and connector between terminal NEO of TRAC ECU and terminal NEO of ECM (See page IN–30).

OK
NG  Repair or replace harness or connector.

2  Check voltage between terminal NEO of TRAC ECU and body ground.

ON

NEO

P  1.  Remove TRAC ECU with connectors still connected.
    2.  Turn ignition switch ON.

C  Measure voltage between terminal NEO of TRAC ECU and body ground for the engine conditions below

OK
Engine condition          Voltage
OFF (IG ON)          4 – 6 V or Below 1 V
ON (Idling)          2 – 3 V (Pulse)

OK
NG  Check and replace TRAC ECU or ECM.

If the same code is still output after the diagnostic code is deleted, check the contact condition of each connection.

8E6853
R08990