Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Check for open and short circuit in harness and connector between terminal NEO of skid control ECU and terminal NEO of ECM (See HOW TO USE THE DIAGNOSTIC TABLE AND INSPECTION ).
1. NG: Repair or replace harness and connector.
2. OK: Go to next step.

Check voltage between terminal NEO of skid control ECU and body ground.

PREPARATION:

Remove the skid control ECU with connectors still connected.

CHECK:

Turn the ignition switch ON.

Measure voltage between terminal NEO of the skid control ECU and body ground for the engine conditions below.

OK:

SKID CONTROL ECU TERMINALS (NEO) VOLTAGE

Engine condition	Voltage
OFF (IG ON)	10 to 14 V or below 1 V
ON (Idling)	10 to 14 V <=> below 1 V (Pulse)

Fig 1: Measuring Voltage Between Terminal NEO Of Skid Control ECU & Body Ground

Fig 2: Skid Control ECU Terminals (NEO) Voltage Graph

NG: Check and replace skid control ECU or ECM.
OK: If the same codes are still output after the DTC is deleted, check the contact condition of each connection.