DTC P0733[FN4A-EL]

DTC P0733	Gear 3 incorrect (incorrect gear ratio detected)
DETECTION CONDITION	• The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is 2.185 (ZY)/2.157 (Z6, LF) or more, the PCM determines that there is a malfunction. Monitoring condition: ― Engine running ― ATF temperature 20 °C {68 °F} or more ― Driving in 3 GR in D or M range ― Turbine speed within 225—4,987 rpm ― Differential gear case (output) revolution speed 35 rpm or more ― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773 • The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is within 1.404—1.704 (ZY)/1.345—1.644 (Z6, LF), the PCM determines that there is a malfunction. Monitoring condition: ― Engine running ― ATF temperature 20 °C {68 °F} or more ― Driving in 3 GR in D or M range ― Torque converter clutch (TCC) not operating ― Turbine speed within 225—4,987 rpm ― Vehicle speed 17 km/h {11 mph} or more (ZY) ― Vehicle speed 19 km/h {12 mph} or more (Z6, LF) ― Differential gear case (output) revolution speed 35 rpm or more ― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773 • The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is 0.848 (ZY)/0.863 (Z6, LF) or less, the PCM determines that there is a malfunction. Monitoring condition: ― Engine running ― ATF temperature 20 °C {68 °F} or more ― Driving in 3 GR in D or M range ― Torque converter clutch (TCC) not operating ― Turbine speed within 225—4,987 rpm ― Vehicle speed 45 km/h {28 mph} or more (ZY) ― Vehicle speed 35 km/h {22 mph} or more (Z6, LF) ― Differential gear case (output) revolution speed 35 rpm or more ― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773 Diagnostic support note: • This is a continuous monitor (CCM). • The MIL does not illuminate. • The AT warning light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA is not available. • A PENDING CODE is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• ATF level low • Deteriorated ATF • Shift solenoids A or C stuck • Pressure control solenoid stuck • Line pressure low • 3-4 clutch slipping • Forward clutch slipping • Control valve stuck (Bypass, TCC or 3-4 shift valve) • Oil pump malfunction • PCM malfunction

DTC P0733

Gear 3 incorrect (incorrect gear ratio detected)

DETECTION CONDITION

• The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is 2.185 (ZY)/2.157 (Z6, LF) or more, the PCM determines that there is a malfunction.

Monitoring condition:

― Engine running

― ATF temperature 20 °C {68 °F} or more

― Driving in 3 GR in D or M range

― Turbine speed within 225—4,987 rpm

― Differential gear case (output) revolution speed 35 rpm or more

― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773

• The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is within 1.404—1.704 (ZY)/1.345—1.644 (Z6, LF), the PCM determines that there is a malfunction.

Monitoring condition:

― Engine running

― ATF temperature 20 °C {68 °F} or more

― Driving in 3 GR in D or M range

― Torque converter clutch (TCC) not operating

― Turbine speed within 225—4,987 rpm

― Vehicle speed 17 km/h {11 mph} or more (ZY)

― Vehicle speed 19 km/h {12 mph} or more (Z6, LF)

― Differential gear case (output) revolution speed 35 rpm or more

― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773

• The PCM monitors revolution ratio of forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is 0.848 (ZY)/0.863 (Z6, LF) or less, the PCM determines that there is a malfunction.

Monitoring condition:

― Engine running

― ATF temperature 20 °C {68 °F} or more

― Driving in 3 GR in D or M range

― Torque converter clutch (TCC) not operating

― Turbine speed within 225—4,987 rpm

― Vehicle speed 45 km/h {28 mph} or more (ZY)

― Vehicle speed 35 km/h {22 mph} or more (Z6, LF)

― Differential gear case (output) revolution speed 35 rpm or more

― None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773

Diagnostic support note:

• This is a continuous monitor (CCM).

• The MIL does not illuminate.

• The AT warning light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA is not available.

• A PENDING CODE is not available.

• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• ATF level low

• Deteriorated ATF

• Shift solenoids A or C stuck

• Pressure control solenoid stuck

• Line pressure low

• 3-4 clutch slipping

• Forward clutch slipping

• Control valve stuck (Bypass, TCC or 3-4 shift valve)

• Oil pump malfunction

• PCM malfunction

STEP	INSPECTION	ACTION
1	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
2	INSPECT ATF CONDITION • Inspect the ATF condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[FN4A-EL].) • Is it normal?	Yes	Go to the next step.
No	Replace the transaxle, then go to Step 8.
3	INSPECT ATF LEVEL • Start the engine. • Warm up the ATX. • Is the ATF level within the specification? (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[FN4A-EL].)	Yes	Go to the next step.
No	Add ATF to the specified level, then go to Step 8.
4	INSPECTION SHIFT SOLENOID A AND C FOR CLICK SOUND • Perform operation inspection. (See SOLENOID VALVE INSPECTION[FN4A-EL].) • Verify the click sound of shift solenoid A and C when applying B+ to each transaxle terminal. • Was a click heard from solenoids?	Yes	Go to the next step.
No	Replace the solenoid where you could not hear a click sound, then go to Step 8. (See SOLENOID VALVE REMOVAL/INSTALLATION[FN4A-EL].)
5	INSPECT LINE PRESSURE • Start the engine. • Measure the line pressures. (See MECHANICAL SYSTEM TEST[FN4A-EL].) • Are the line pressures within the specifications?	Yes	Go to the next step.
No	All ranges: Replace the oil pump, then go to Step 8. Any ranges: Replace the control valve body, then go to Step 8. (See CONTROL VALVE BODY REMOVAL[FN4A-EL].) (See CONTROL VALVE BODY INSTALLATION[FN4A-EL].)
6	INSPECT STALL SPEED • Measure the stall speed in D range. (See MECHANICAL SYSTEM TEST[FN4A-EL].) • Is the stall speed within the specification?	Yes	Go to the next step.
No	Replace the automatic transaxle, then go to Step 8. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION (ZY, Z6)[FN4A-EL].) (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION (LF)[FN4A-EL].)
7	INSPECT FREQUENCY OF INPUT/TURBINE SPEED SENSOR WHEN DRIVING VEHICLE • Turn the ignition switch to the LOCK position. • Connect the M-MDS. • Start the engine. • Measure the frequency of input/turbine speed sensor while driving vehicle under the following conditions: ― Vehicle speed (VSS PID): 60 km/h {37 mph} ― Drive in the D range, 3GR ― Throttle opening angle (THOP PID): approx. 25% • Was the frequency of the input/turbine speed sensor at approx. 1,200 Hz?	Yes	Go to the next step.
No	Replace the control valve body, then go to the next step. (See CONTROL VALVE BODY REMOVAL[FN4A-EL].) (See CONTROL VALVE BODY INSTALLATION[FN4A-EL].)
8	VERIFY REPAIR OF DTC P0733 • Make sure to reconnect all the disconnected connectors. • Clear the DTC using the M-MDS. • Start the engine. • Warm up the transaxle. • Drive the vehicle under the following conditions for more than 2 s: ― ATF temperature: 20 °C {68 °F} or more ― Drive in the D range, 3GR ― Vehicle speed (VSS PID): 45 km/h {28 mph} or more (ZY) ― Vehicle speed (VSS PID): 35 km/h {22 mph} or more (Z6, LF) • Are any DTCs present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION[ZJ, ZY, Z6].) (See CONTROL SYSTEM WIRING DIAGRAM[LF, L3].)
No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE[FN4A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE[FN4A-EL].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes

Perform repair or diagnosis according to the available Service Information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT ATF CONDITION

• Inspect the ATF condition.

(See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[FN4A-EL].)

• Is it normal?

Yes

Go to the next step.

Replace the transaxle, then go to Step 8.

INSPECT ATF LEVEL

• Start the engine.

• Warm up the ATX.

• Is the ATF level within the specification?

(See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[FN4A-EL].)

Yes

Go to the next step.

Add ATF to the specified level, then go to Step 8.

INSPECTION SHIFT SOLENOID A AND C FOR CLICK SOUND

• Perform operation inspection.

(See SOLENOID VALVE INSPECTION[FN4A-EL].)

• Verify the click sound of shift solenoid A and C when applying B+ to each transaxle terminal.

• Was a click heard from solenoids?

Yes

Go to the next step.

Replace the solenoid where you could not hear a click sound, then go to Step 8.

(See SOLENOID VALVE REMOVAL/INSTALLATION[FN4A-EL].)

INSPECT LINE PRESSURE

• Start the engine.

• Measure the line pressures.

(See MECHANICAL SYSTEM TEST[FN4A-EL].)

• Are the line pressures within the specifications?

Yes

Go to the next step.

All ranges: Replace the oil pump, then go to Step 8.

Any ranges: Replace the control valve body, then go to Step 8.

(See CONTROL VALVE BODY REMOVAL[FN4A-EL].)

(See CONTROL VALVE BODY INSTALLATION[FN4A-EL].)

INSPECT STALL SPEED

• Measure the stall speed in D range.

(See MECHANICAL SYSTEM TEST[FN4A-EL].)

• Is the stall speed within the specification?

Yes

Go to the next step.

Replace the automatic transaxle, then go to Step 8.

(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION (ZY, Z6)[FN4A-EL].)

(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION (LF)[FN4A-EL].)

INSPECT FREQUENCY OF INPUT/TURBINE SPEED SENSOR WHEN DRIVING VEHICLE

• Turn the ignition switch to the LOCK position.

• Connect the M-MDS.

• Start the engine.

• Measure the frequency of input/turbine speed sensor while driving vehicle under the following conditions:

― Vehicle speed (VSS PID): 60 km/h {37 mph}

― Drive in the D range, 3GR

― Throttle opening angle (THOP PID): approx. 25%

• Was the frequency of the input/turbine speed sensor at approx. 1,200 Hz?

Yes

Go to the next step.

Replace the control valve body, then go to the next step.

(See CONTROL VALVE BODY REMOVAL[FN4A-EL].)

(See CONTROL VALVE BODY INSTALLATION[FN4A-EL].)

VERIFY REPAIR OF DTC P0733

• Make sure to reconnect all the disconnected connectors.

• Clear the DTC using the M-MDS.

• Start the engine.

• Warm up the transaxle.

• Drive the vehicle under the following conditions for more than 2 s:

― ATF temperature: 20 °C {68 °F} or more

― Drive in the D range, 3GR

― Vehicle speed (VSS PID): 45 km/h {28 mph} or more (ZY)

― Vehicle speed (VSS PID): 35 km/h {22 mph} or more (Z6, LF)

• Are any DTCs present?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION[ZJ, ZY, Z6].)

(See CONTROL SYSTEM WIRING DIAGRAM[LF, L3].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the "After Repair Procedure".

(See AFTER REPAIR PROCEDURE[FN4A-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE[FN4A-EL].)

DTC troubleshooting completed.