DTC P0742:00

id050200818300

DTC P0742:00

TCC stuck on

DETECTION CONDITION

•  The PCM detects that difference between the input revolution and output revolution is more than 50 rpm when the following conditions are met.

―  4GR

―  Vehicle speed: between more than 70 km/h {43 mph}

―  TCC operation: Off

―  Throttle opening angle: 0.781—3.125%

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL does not illuminate.

•  The The HOLD indicator light flashes if the PCM detects the above malfunction condition during the first drive cycle.

•  PENDING CODE is not available.

•  FREEZE FRAME DATA is not available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Deteriorated ATF

•  ATF level low

•  Line pressure low

•  Shift solenoids A, B, C, D, E, and pressure control solenoid malfunction

•  Control valve body malfunction

•  PCM malfunction

DTC P0742:00	TCC stuck on
DETECTION CONDITION	• The PCM detects that difference between the input revolution and output revolution is more than 50 rpm when the following conditions are met. ― 4GR ― Vehicle speed: between more than 70 km/h {43 mph} ― TCC operation: Off ― Throttle opening angle: 0.781—3.125% Diagnostic support note: • This is a continuous monitor (CCM). • The MIL does not illuminate. • The The HOLD indicator light flashes if the PCM detects the above malfunction condition during the first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Deteriorated ATF • ATF level low • Line pressure low • Shift solenoids A, B, C, D, E, and pressure control solenoid malfunction • Control valve body malfunction • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Bulletins and/or on-line repair information availability. • Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT ATF CONDITION • Inspect the ATF condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION.) • Is it normal?	Yes	Go to the next step.
2		No	If the oil color is milky or reddish brown, replace the ATF, then go to Step 4. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT.)
3	INSPECT ATF LEVEL • Inspect the ATF level. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION.) • Is it normal?	Yes	Go to the next step.
3		No	Add ATF to the specified level, then go to Step 6. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT.)
4	INSPECT LINE PRESSURE • Measure the line pressures. (See MECHANICAL SYSTEM TEST.) • Are the line pressures within the specifications?	Yes	Go to the next step.
4		No	All ranges: Replace the oil pump, then go to Step 6. Any ranges: Replace the control valve body, then go to Step 6. (See CONTROL VALVE BODY REMOVAL.) (See CONTROL VALVE BODY INSTALLATION.)
5	INSPECT OPERATION OF EACH VALVE AND EACH SPRING • Remove the control valve body. (See CONTROL VALVE BODY REMOVAL.) • Disassemble the control valve body. • Is each valve operation normal and is the return spring normal?	Yes	Replace the transaxle, then go to the next step (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION.)
5		No	Repair or replace the valve and return spring, then go to the next step.
6	VERIFY TROUBLESHOOTING OF DTC P0742:00 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from the memory using the M-MDS. • Perform the following procedure to ensure that the DTC has been resolved: 1. Drive the vehicle under the following conditions for 3 s. • 4GR • TCC operation Off • Vehicle speed: more than 70 km/h {43 mph} • Throttle opening angle: fully closed 2. Drive the vehicle under the following conditions for 3 s. • 4GR • TCC operation Off • Vehicle speed: more than 70 km/h {43 mph} • Throttle opening angle: 3.13—10.1% 3. Drive the vehicle under the following conditions for 3 s. • 4GR • TCC operation Off • Vehicle speed: more than 70 km/h {43 mph} • Throttle opening angle: more than 10.1% • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [ZJ, ZY].)
6		No	Go to the next step.
7	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE.) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE.)
7		No	DTC troubleshooting completed.