C1224

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1224/44: NE Signal Circuit

DTC C1224/44 - NE Signal Circuit

DESCRIPTION

The skid control ECU receives engine revolution speed signals (NE signals) from the ECM.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (Programming and Relearning).

PROCEDURE

1. INSPECT SKID CONTROL ECU CONNECTOR SECURELY CONNECTED
(a) Check if the connector is connected.
OK:
The connector should be securely connected.
NG -- CONNECT CONNECTOR TO ECU CORRECTLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ECM)

(a) Disconnect the skid control ECU connector and the ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT ECM (NEO TERMINAL)

(a) Reconnect the ECM connector and the skid control ECU connector.

(b) Check the signal waveform between terminal NEO (E6-17) of the ECM and body ground for the engine conditions below.
Standard voltage:

NG -- REPLACE ECM
OK -- Continue to next step.
4. RECONFIRM DTC
(a) Clear the DTCs (Vehicle Stability Control System).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded?
NO -- END
YES -- REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY