INSPECTION PROCEDURE 10: Early or Late Shifting All Gears: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tool:

MB991502: Scan Tool (MUT-II)

STEP 1. Using scan tool MB991502, check data list item 23: Output Shaft Speed Sensor.
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Start the engine.
3. Set scan tool MB991502 to data reading mode for item 23: Output Shaft Speed Sensor.
  - When driving at constant speed of 50km/h (31mph), the display should be 1,600 - 1,900 r/min < 2.4L Engine >, 1,300 - 1,600 r/min < 3.0L Engine >. (Gear range: 3rd gear)
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : Go to Step 2.

NO: Refer to DTC 23: Output shaft speed sensor system .

Fig 1: Connecting Scan Tool To Data Link Connector
Courtesy of CHRYSLER CORP.
STEP 2. Using scan tool MB991502, check data list item 11: TP Sensor.
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991502 to data reading mode for item 11: TP Sensor.
  - With the throttle valve in idle position, voltage should measure between 535 and 735 mV.
  - With the throttle valve in full-open position, voltage should measure between 4,500 and 5,500 mV.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 535 and 735 mV at idle, and between 4,500 and 5,500 mV in the full-open position?

YES : Go to Step 3.

NO: Check the TP sensor. Refer to DTCs 11 , 12 , 14: TP Sensor System. Then check the symptom .

Fig 2: Connecting Scan Tool To Data Link Connector
Courtesy of CHRYSLER CORP.

STEP 3. Using scan tool MB991502, check data list.

Connect scan tool MB991502 to the data link connector.
Start the engine.

Set scan tool MB991502 to data reading mode for following items.

Item 31: Low-Reverse Solenoid Valve Duty Percent
Item 32: Underdrive Solenoid Valve Duty Percent
Item 33: Second Solenoid Valve Duty Percent

Item 34: Overdrive Solenoid Valve Duty Percent

Check that the values shown below are displayed when each data list item is entered.

Fig 3: Connecting Scan Tool To Data Link Connector

Courtesy of CHRYSLER CORP.

DATA LIST ITEM

DRIVING CONDITION	DATA LIST ITEM
DRIVING CONDITION	31	32	33	34
Driving at constant speed of 10 km/h (6.2 mph) in 1st gear	0%	0%	100%	100%
Driving at constant speed of 30 km/h (19 mph) in 2nd gear	100%	0%	0%	100%
Driving at constant speed of 50 km/h (31 mph) in 3rd gear	100%	0%	100%	0%
Driving at constant speed of 50 km/h (31 mph) in 4th gear	100%	100%	0%	0%

Turn the ignition switch to the "LOCK" (OFF) position.

Q: Are the solenoid valves operating properly?

YES : Go to Step 4.

NO: Go to Step 6.

STEP 4. Adjust the line pressure.
Adjust the line pressure. Refer to LINE PRESSURE ADJUSTMENT . Then check the symptom.

Q: Is the symptom eliminated?

YES : The procedure is complete.

NO: Go to Step 5.
STEP 5. Disassemble and clean the valve body.
Check the O-ring installation bolts for looseness and the valve body for damage. Repair or replace the faulty parts. Refer to VALVE BODY .

Replace the valve body assembly if the damages are thought to be irreparable. Then check the symptom.

Q: Is the symptom eliminated?

YES : The procedure is complete.

NO: Go to Step 7.

Fig 4: Identifying Valve Body Assembly
Courtesy of CHRYSLER CORP.
STEP 6. Replace each solenoid valve.
Replace the faulty solenoid valve with a new one.

Q: Is the symptom eliminated?

YES : The procedure is complete.

NO: Go to Step 7.

Fig 5: Identifying Overdrive Solenoid Valve
Courtesy of CHRYSLER CORP.
STEP 7. Replace the PCM.
Q: Is the symptom eliminated?

YES : The procedure is complete.

NO: Start over at Step 1.