158 OBD
30.0 EMPS (ELECTRIC MOTOR-
ASSISTED POWER STEERING)
The M-OBD EMPS system provides enhanced diagnostic functions and procedures. The
M-OBD EMPS system is diagnosed using the Tester connected to DLC3. Please verify the
correct vehicle connection. Depending on the specific vehicle configuration, the menu
selection for Records Clearance may not appear. For Operating Procedures for the Data
List, DTC Info, and Snapshot functions, please refer to Section 4.0: M-OBD Functions.
ACTIVE KEYS
u d Change to next/previous menu item.
1, 2, 4 - 7 Select menu item.
E Select highlighted menu item.
X Return to the previous menu.
TRQ SENSOR ADJUST
Press 5 to select <TRQ SENS ADJUST> from the <DIAGNOSTIC MENU>. The TRQ
SENS ADJUST function is used to initialize and adjust the zero point for steering. Please
reference the Service Manual for the Torque Sensor Adjustment procedure.
RECORDS CLEAR
Press 6 to select <RECORDS CLEAR> from the <DIAGNOSTIC MENU>. The
RECORDS CLEAR function is used to clear particular error data from target ECU.
SIGNAL CHECK
Press 7 to select <SIGNAL CHECK> from the <DIAGNOSTIC MENU>. The SIGNAL
CHECK function is used to check the EMPS sensor signals. Refer to the service manual
before performing this function.
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