Diagnosis Procedure
- CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to "CONSULT-III FUNCTION (TRANSMISSION) ".
Is any malfunction of the "U1000 CAN COMM CIRCUIT" indicated?
YES: Check CAN communication line. Refer to DTC U1000 CAN COMMUNICATION LINE .
NO: GO TO 2.
- CHECK INPUT SIGNALS
With CONSULT-III
- Start engine.
- Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
- Start vehicle and read out the value of "SEC HYDR SEN".
ITEM NAME VALUE CHARTItem name Condition Display value (Approx.) SEC HYDR SEN "N" position idle 1.0 V Without CONSULT-III
- Start engine.
- Check voltage between TCM connector terminals and ground.
CONNECTOR TERMINAL VOLTAGE CHARTName Connector Terminal Condition Voltage (Approx.) Transmission fluid pressure sensor A (Secondary pressure sensor) F23 15 - Ground "N" position idle 1.0 V OK or NG
OK: GO TO 6.
NG: GO TO 3.
- CHECK LINE PRESSURE
Perform line pressure test. Refer to "INSPECTIONS BEFORE TROUBLE DIAGNOSIS ".
OK or NG
OK: GO TO 4.
NG: Repair or replace damaged parts. Refer to "INSPECTIONS BEFORE TROUBLE DIAGNOSIS ".
- CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYSTEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to DTC P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR) .
OK or NG
OK: GO TO 5.
NG: Repair or replace damaged parts.
- DETECT MALFUNCTIONING ITEM
Check the following:
- Pressure control solenoid valve A (Line pressure solenoid valve). Refer to "COMPONENT INSPECTION ".
- Pressure control solenoid valve B (Secondary pressure solenoid valve). Refer to "COMPONENT INSPECTION ".
- Step motor. Refer to "COMPONENT INSPECTION ".
OK or NG
OK: GO TO 6.
NG: Repair or replace damaged parts.
- CHECK DTC
Perform "DTC CONFIRMATION PROCEDURE ".
OK or NG
OK: INSPECTION END
NG: Replace TCM or transaxle assembly. Refer to "REMOVAL AND INSTALLATION (MR20DE) ".