Symptom Procedures - Except Evolution: Diagnosis Mitsubishi Lancer IX

TROUBLESHOOTING HINTS (The most likely causes for this case:)

1. Malfunction of the Park/Neutral position switch
2. Malfunction of the transaxle control cable assembly
3. Malfunction of the engine system
4. Malfunction of the torque converter
5. Malfunction of the transaxle oil pump
6. Malfunction of the PCM

DIAGNOSIS

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 691

Scheme 692

Scheme 693

Scheme 694

1. STEP 1. Using scan tool MB991502, read the A/T diagnostic trouble code. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Check for A/T diagnostic trouble code. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is A/T DTCs "27" or "28" set? YES: Refer to «DTC 27: PARK/NEUTRAL POSITION SWITCH SYSTEM (OPEN CIRCUIT)»(ref-183628-S35629633162005081800000) or «DTC 28: PARK/NEUTRAL POSITION SWITCH SYSTEM (SHORT CIRCUIT)»(ref-183628-S41598428242005081800000) . NO: Go to Step 2.
2. STEP 2. Check the transaxle control cable assembly. Move the selector lever to each position. The manual control lever position of the Park/Neutral position switch should match the selector lever position. Q: Is the manual control lever position correct? YES: Go to Step 3. NO: Repair the transaxle control cable. Refer to «PARK/NEUTRAL POSITION SWITCH AND CONTROL CABLE ADJUSTMENT»(ref-183626-S34209902512005081800000) . Retest the system to verify the repair.
3. STEP 3. Check the engine. Refer to «SYMPTOMS»(ref-152079-S33931407582003011300000) . Q: Is the inspection result good? YES: Go to Step 4. NO: Repair or replace the appropriate engine components.
4. STEP 4. Check the torque converter. Remove the starter. Turn the torque converter and check for a binding or sticking condition. Check the ring gear for damaged or missing teeth. NOTE: Since the torque converter drives the oil pump, turning the torque converter also checks for a binding oil pump. If either of these components are damaged the transaxle will need to be removed for inspection. Q: Does the torque converter turn freely without any missing or damaged teeth? YES: Go to Step 5. NO: Replace the torque converter. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) .
5. STEP 5. Repair or replace the starter. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 6.
6. STEP 6. Replace the oil pump. Replace the oil pump (Oil pump cannot be repaired). Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Confirm that the malfunction symptom is eliminated. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 7.
7. STEP 7. Replace the PCM. Q: Does the engine crank when the selector lever is placed in the "P" or "N" position? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal line pressure
2. Malfunction of the underdrive solenoid valve
3. Malfunction of the underdrive clutch
4. Malfunction of the valve body
5. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 695

Scheme 696

Scheme 697

Scheme 698

1. STEP 1. Using scan tool MB991502, check actuator test item 02: Underdrive Solenoid Valve. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for item 02: Underdrive Solenoid Valve. An audible clicking or buzzing should be heard when the underdrive solenoid valve is energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES: Go to Step 2. NO: Repair or replace the underdrive solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check the hydraulic pressure. Shift the selector lever to the "L" range then measure the hydraulic pressure of each element in 1st speed to check and see if each respective hydraulic pressure is within the range of standard pressure. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 3. NO: Go to Step 4 .
3. STEP 3. Check the underdrive clutch system. Remove the valve body cover and valve body. Refer to «TRANSAXLE ASSEMBLY»(ref-183626-S08945470842005081800000) and «TRANSAXLE»(ref-183630-S22398195512005081800000) . Blow 108 kPa (15psi) compressed air into the underdrive clutch oil orifice of the transaxle case, and check if the underdrive clutch piston moves and air pressure is maintained in that condition. Q: Is the air pressure maintained? YES: Go to Step 4. NO: Go to Step 5 .
4. STEP 4. Disassemble and clean the valve body. Check the O-ring installation bolts for looseness and valve body for damage. Repair or replace the faulty parts. Refer to , «VALVE BODY»(ref-183630-S00948603182005081800000) . 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 6 .
5. STEP 5. Check the underdrive clutch. Remove the transaxle assembly. Check the facing for seizure and the piston seal ring for damage and interference with the retainer. Repair or replace the faulty parts. Refer to «UNDERDRIVE CLUTCH AND INPUT SHAFT»(ref-183630-S42133146572005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 6.
6. STEP 6. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal reverse clutch pressure
2. Abnormal low-reverse brake pressure
3. Malfunction of the low-reverse solenoid valve
4. Malfunction of the reverse clutch
5. Malfunction of the low-reverse brake
6. Malfunction of the valve body
7. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 699

Scheme 700

Scheme 701

Scheme 702

1. STEP 1. Using scan tool MB991502, check actuator test item 01: Low-Reverse Solenoid Valve. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for item 01: Low-Reverse Solenoid Valve. An audible clicking or buzzing should be heard when the low-reverse solenoid valve is energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES: Go to Step 2. NO: Repair or replace the low-reverse solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check the hydraulic pressure (for reverse clutch). Measure the hydraulic pressure for reverse clutch when the selector lever is at the "R" range, and check if the hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 3. NO: Go to Step 5 .
3. STEP 3. Check the hydraulic pressure (for low-reverse brake). Measure the hydraulic pressure for low-reverse brake when the selector lever is at the "R" range, and check if the hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 4. NO: Go to Step 5 .
4. STEP 4. Check the reverse clutch system and low-reverse brake system. Remove the valve body cover and valve body. Refer to «TRANSAXLE ASSEMBLY»(ref-183626-S08945470842005081800000) and «TRANSAXLE»(ref-183630-S22398195512005081800000) . Blow 108 kPa (15psi) compressed air into the reverse clutch oil orifice of the transaxle case. Then check if the reverse clutch piston moves and air pressures are maintained in that condition. Repeat for the low-reverse brake. Q: Are the reverse clutch, low-reverse brake or both air pressures maintained? YES: Go to Step 5. NO: Go to Step 6 .
5. STEP 5. Disassemble and clean the valve body. Check the O-ring installation bolts for looseness and valve body for damage. Repair or replace the faulty parts. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Replace the bulb 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 .
6. STEP 6. Check the reverse clutch, low-reverse brake or both. Remove the transaxle. Check the facing for seizure and the piston seal ring for damage and interference with the retainer. Repair or replace the faulty parts. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) and «REVERSE AND OVERDRIVE CLUTCH»(ref-183630-S21413149042005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 7.
7. STEP 7. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal line pressure
2. Malfunction of the power train
3. Malfunction of the oil pump
4. Malfunction of the valve body
5. Low A/T fluid level
6. Malfunction of the PCM

Scheme 703

Scheme 704

Scheme 705

1. STEP 1. Check the hydraulic pressure. Measure the hydraulic pressure of each element when the transaxle is in 1st, 2nd or reverse. Check if each hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . If some elements are within the standard value and some are not, recheck the symptom. Q: Are all pressures within the standard value? YES: Check A/T fluid level and condition. If not OK, repair or replace as necessary, then recheck symptom. If OK, go to Step 3 . NO: Go to Step 2.
2. STEP 2. Disassemble and clean the valve body. Check the O-ring installation bolts for looseness and valve body for damage. Repair or replace the faulty parts. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Replace the bulb 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 4 .
3. STEP 3. Check the transaxle power train components. Disassemble the transaxle and check the planetary carrier and output shaft, etc. Repair or replace the damaged parts. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) , «PLANETARY GEAR»(ref-183630-S03281341232005081800000) , «OUTPUT SHAFT»(ref-183630-S41488551502005081800000) and «DIFFERENTIAL»(ref-183630-S36879634892005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 5 .
4. STEP 4. Replace the oil pump. Remove the transaxle. Replace the oil pump (Oil pump cannot be repaired). Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 5.
5. STEP 5. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Malfunction of the engine system
2. Malfunction of the torque converter clutch solenoid
3. Malfunction of the valve body
4. Malfunction of the torque converter (Malfunction of the torque converter clutch)
5. Malfunction of the PCM

Scheme 706

Scheme 707

Scheme 708

1. STEP 1. Check the engine system. Refer to When the engine is hot, it stalls at idle, see «SYMPTOMS»(ref-152079-S33931407582003011300000) . Q: Is the inspection result good? YES: Go to Step 2. NO: Repair or replace the engine components.
2. STEP 2. Replace the torque converter clutch solenoid valve. Replace the torque converter clutch solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 3.
3. STEP 3. Disassemble and clean the valve body. Check the O-ring installation bolts for looseness and valve body for damage. Repair or replace the faulty parts. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Replace the bulb body assembly if the damages are thought to be irreparable. Then check the symptom. Q: Is the repair possible and the symptom eliminated? YES: The procedure is complete. NO: Go to Step 4.
4. STEP 4. Replace the torque converter assembly. Remove the transaxle. Replace the torque converter assembly. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 5.
5. STEP 5. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal underdrive clutch pressure
2. Malfunction of the underdrive solenoid valve
3. Malfunction of the underdrive clutch
4. Malfunction of the valve body
5. Malfunction of the TP sensor
6. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 709

Scheme 710

Scheme 711

Scheme 712

Scheme 713

1. STEP 1. Using scan tool MB991502, check actuator test item 02: Underdrive Solenoid Valve. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for item 02: Underdrive Solenoid Valve. An audible clicking or buzzing should be heard when the underdrive solenoid valve is energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES: Go to Step 2. NO: Repair or replace the underdrive solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check when shift shock occurs. Q: When does the shift shock occur? When engaging from "N" to "D": Go to Step 3. When the vehicle starts moving: Go to Step 6 .
3. STEP 3. Check the hydraulic pressure (for underdrive clutch). Measure the hydraulic pressure for underdrive clutch when the selector lever is shifted from "N" to "D" range. Check if the hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 4. NO: Go to Step 8 .
4. STEP 4. Check the underdrive clutch system. Remove the valve body cover and valve body. Refer to «TRANSAXLE ASSEMBLY»(ref-183626-S08945470842005081800000) and «TRANSAXLE»(ref-183630-S22398195512005081800000) . Blow 108 kPa (15 psi) compressed air into the underdrive clutch oil orifice of the transaxle case, and check if the underdrive clutch piston moves and air pressure is maintained in that condition. Q: Is the air pressure maintained? YES: Go to Step 8 . NO: Go to Step 5.
5. STEP 5. Check the underdrive clutch. Remove the transaxle assembly. Check the facing for seizure and the piston seal ring for damage and interference with the retainer. Repair or replace the faulty parts. Refer to «UNDERDRIVE CLUTCH AND INPUT SHAFT»(ref-183630-S42133146572005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 9 .
6. STEP 6. Check shift shock. Q: Does shift shock occur? YES: Go to Step 7. NO: Go to Step 8 .
7. STEP 7. Using scan tool MB991502, check data list item 11: TP 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to data reading mode for item 11: TP Sensor. With the throttle valve in idle position, voltage should measure between 335 and 935 mV. With the throttle valve in full-open position, voltage should measure between 4,400 and 5,300 mV. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage between 335 and 935 mV at idle, and between 4,400 and 5,300 mV in the full-open position? YES: Go to Step 8. NO: Check the TP sensor. Refer to «DTC 11: TP SENSOR SYSTEM (SHORT CIRCUIT)»(ref-183628-S06435023972005081800000) , «DTC 12: TP SENSOR SYSTEM (OPEN CIRCUIT)»(ref-183628-S29766917612005081800000) and «DTC 14: TP SENSOR SYSTEM (MALADJUSTED SENSOR)»(ref-183628-S30154185252005081800000) . Then check the symptom.
8. STEP 8. 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»(ref-183630-S00948603182005081800000) . Replace the bulb 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: Replace the valve body assembly. Then check the symptom. Go to Step 9.
9. STEP 9. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

TROUBLESHOOTING HINTS (The most likely causes for this code to be set:)

1. Abnormal reverse clutch pressure
2. Abnormal low-reverse brake pressure
3. Malfunction of the low-reverse solenoid valve
4. Malfunction of the reverse clutch
5. Malfunction of the low-reverse brake
6. Malfunction of the valve body
7. Malfunction of the TP sensor
8. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 714

Scheme 715

Scheme 716

Scheme 717

Scheme 718

1. STEP 1. Using scan tool MB991502, check actuator test item 01: Low-Reverse Solenoid Valve. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for item 01: Low-Reverse Solenoid Valve. An audible clicking or buzzing should be heard when the low-reverse solenoid valve is energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES: Go to Step 2. NO: Repair or replace the low-reverse solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check when shift shock occur. Q: When does the shift shock occur? When engaging from "N" to "R": Go to Step 3. When the vehicle starts moving: Go to Step 7 .
3. STEP 3. Check the hydraulic pressure (for reverse clutch). Measure the hydraulic pressure for reverse clutch when the selector lever is at the "R" range. Check if the hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 4. NO: Go to Step 9 .
4. STEP 4. Check the hydraulic pressure (for low-reverse brake). Measure the hydraulic pressure for low-reverse brake when the selector lever is at the "R" range. Check if the hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the hydraulic pressure within the standard value? YES: Go to Step 5. NO: Go to Step 9 .
5. STEP 5. Check the reverse clutch system and low-reverse brake system. Remove the valve body cover and valve body. Refer to «TRANSAXLE ASSEMBLY»(ref-183626-S08945470842005081800000) and «TRANSAXLE»(ref-183630-S22398195512005081800000) . Blow 108 kPa (15 psi) compressed air into the reverse clutch oil orifice of the transaxle case, and check if the reverse clutch piston moves and air pressures are maintained in that condition. Repeat for the low-reverse brake. Q: Are both air pressures maintained? YES: Go to Step 6. NO: Go to Step 9 .
6. STEP 6. Check the reverse clutch and low-reverse brake. Remove the transaxle assembly. Check the facing for seizure and the piston seal ring for damage and interference with the retainer. Repair or replace the faulty parts. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) and «REVERSE AND OVERDRIVE CLUTCH»(ref-183630-S21413149042005081800000) . Then Retest the system. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 10 .
7. STEP 7. Check shift shock. Q: Does shift shock occur sometimes? YES: Go to Step 8. NO: Go to Step 9 .
8. STEP 8. Using scan tool MB991502, check data list item 11: TP 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to data reading mode for item 11: TP Sensor. With the throttle valve in idle position, voltage should measure between 335 and 935 mV. With the throttle valve in full-open position, voltage should measure between 4,400 and 5,300 mV. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage between 335 and 935 mV at idle, and between 4,400 and 5,300 mV in the full-open position? YES: Go to Step 9. NO: Check the TP sensor. Refer to «DTC 11: TP SENSOR SYSTEM (SHORT CIRCUIT)»(ref-183628-S06435023972005081800000) , «DTC 12: TP SENSOR SYSTEM (OPEN CIRCUIT)»(ref-183628-S29766917612005081800000) and «DTC 14: TP SENSOR SYSTEM (MALADJUSTED SENSOR)»(ref-183628-S30154185252005081800000) . Then check the symptom.
9. STEP 9. 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»(ref-183630-S00948603182005081800000) . Replace the bulb 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 10.
10. STEP 10. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. s NO: Start over at Step 1 .

1. Abnormal line pressure
2. Malfunction of the oil pump
3. Malfunction of the valve body
4. Malfunction of the PCM

Scheme 719

Scheme 720

1. STEP 1. Check the hydraulic pressure. Measure the hydraulic pressure of each element when the transaxle is in 1st, 2nd or reverse. Check if each hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . If some elements are within the standard value and some are not, recheck the symptom. Q: Are all hydraulic pressures within the standard value? YES: Go to Step 3 . NO: Go to Step 2.
2. STEP 2. Adjust line pressure. Adjust line pressure. Refer to «LINE PRESSURE ADJUSTMENT»(ref-183627-S16907788642005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 3.
3. STEP 3. Check when shift shock occurs. Q: When does the shift shock occur? When engaging from "N" to "D" and "N" to "R": Go to Step 4. When the vehicle starts moving: Go to Step 5 .
4. STEP 4. Replace the oil pump. Remove the transaxle. Replace the oil pump. (Oil pump cannot be repaired). Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 6 .
5. STEP 5. Disassemble and clean the valve body. Check the installation bolts for looseness and the O-ring, valves and valve body for damage. Repair or replace the faulty parts. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Replace the bulb 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 6.
6. STEP 6. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal line pressure
2. Malfunction of each solenoid valve
3. Malfunction of the oil pump
4. Malfunction of the valve body
5. Malfunction of each brake or each clutch
6. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 721

Scheme 722

Scheme 723

Scheme 724

1. STEP 1. Using scan tool MB991502, check actuator test. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for following items. Item 01: Low-reverse solenoid valve Item 02: Underdrive solenoid valve Item 03: Second solenoid valve Item 04: Overdrive solenoid valve An audible clicking or buzzing should be heard when the solenoid valves are energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Are the solenoid valves operating properly? YES: Go to Step 2. NO: Repair or replace the solenoid valves. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check the hydraulic pressure. Measure the hydraulic pressure of each element. Check if each hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . If some elements are within the standard value and some are not, recheck the symptom. Q: Are all hydraulic pressures within the standard value? YES: Go to Step 6 . NO: Go to Step 3.
3. STEP 3. Adjust the line pressure. Adjust the line pressure. Refer to «LINE PRESSURE ADJUSTMENT»(ref-183627-S16907788642005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 4.
4. STEP 4. Replace the oil pump. Remove the transaxle. Replace the oil pump. (Oil pump can not be repaired). Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 5.
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»(ref-183630-S00948603182005081800000) . Replace the bulb 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 .
6. STEP 6. Check each brake and clutch. Remove the transaxle. Check the facing for seizure and piston seal ring for damage and interference with retainer. Repair or replace the faulty parts. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) , «UNDERDRIVE CLUTCH AND INPUT SHAFT»(ref-183630-S42133146572005081800000) and «REVERSE AND OVERDRIVE CLUTCH»(ref-183630-S21413149042005081800000) . Then Retest the system. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 7.
7. STEP 7. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Malfunction of the output shaft speed sensor
2. Malfunction of the TP sensor
3. Malfunction of each solenoid valve
4. Abnormal line pressure
5. Malfunction of the valve body
6. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 725

Scheme 726

Scheme 727

Scheme 728

Scheme 729

Scheme 730

1. 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. Connect scan tool MB991502 to the data link connector. Start the engine. Set scan tool MB991502 to data reading mode for item 23: Output Shaft Speed Sensor. When driving at constant speed of 50km/h (31 mph), 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) 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»(ref-183628-S26724880262005081800000) .
2. STEP 2. Using scan tool MB991502, check data list item 11: TP Sensor. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to data reading mode for item 11: TP Sensor. With the throttle valve in idle position, voltage should measure between 335 and 935 mV. With the throttle valve in full-open position, voltage should measure between 4,400 and 5,300 mV. 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 throttle position sensor. Refer to «DTC 11: TP SENSOR SYSTEM (SHORT CIRCUIT)»(ref-183628-S06435023972005081800000) , «DTC 12: TP SENSOR SYSTEM (OPEN CIRCUIT)»(ref-183628-S29766917612005081800000) and «DTC 14: TP SENSOR SYSTEM (MALADJUSTED SENSOR)»(ref-183628-S30154185252005081800000) . Then check the malfunction.
3. 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. 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 .
4. STEP 4. Adjust the line pressure. Adjust the line pressure. Refer to «LINE PRESSURE ADJUSTMENT»(ref-183627-S16907788642005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 5.
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»(ref-183630-S00948603182005081800000) . Replace the bulb 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 .
6. 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.
7. STEP 7. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Malfunction of the valve body
2. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 731

Scheme 732

1. STEP 1. Using scan tool MB991502, check actuator test item 14: INVECS-II Cancel Command. 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. Connect scan tool MB991502 to the data link connector. Start the engine. Set scan tool MB991502 to actuator test mode for item 14: INVECS-II Cancel Command. Drive the vehicle and confirm the gear shifting correspond to the standard shift line of the shift pattern diagram. Refer to «GENERAL DESCRIPTION»(ref-183626-S00797663342005081800000) . Turn the ignition switch to the "LOCK" (OFF) position. Q: Does the gear shifting correspond to the standard shift line of the shift pattern diagram? YES: The symptom is due to characteristics of the INVECS-II system, but is not abnormal. NO: Go to Step 2.
2. STEP 2. Check the shift points. Q: Are the shift points early or late only when A/T fluid is - 29°C (84°F ) or less (early), or 125°C (257°F ) or more (late)? YES: The symptom is due to characteristics of the INVECS-II system, but is not abnormal. NO: Go to Step 3.
3. STEP 3. 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»(ref-183630-S00948603182005081800000) . Replace the bulb 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 4.
4. STEP 4. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

Scheme 733

1. Malfunction of the Park/Neutral position switch
2. Damaged harness, connector
3. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 734

Scheme 735

Scheme 736

Scheme 737

Scheme 738

Scheme 739

1. STEP 1. Check the vehicle acceleration. Q: Does the vehicle accelerate poorly (transaxle stays in 3rd gear) when starting from a stop with the selector lever in "D" range? YES: Go to Step 2. NO: Go to Step 5 .
2. STEP 2. Measure the backup power supply voltage at PCM connector C-118 by backprobing. Do not disconnect connector C-118. Measure the voltage between terminal 66 and ground by backprobing. The voltage should measure battery positive voltage. Q: Is the measured voltage battery positive voltage? YES: Go to Step 5 . NO: Go to Step 3.
3. STEP 3. Check intermediate connector A-13 and PCM connector C-118 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Is the connector in good condition? YES: Go to Step 4. NO: Repair or replace the damaged components. Then retest the system.
4. STEP 4. Check the harness for open circuit between PCM connector C-118 terminal 66 and battery. Q: Is the harness wire in good condition? YES: Go to Step 5. NO: Repair or replace the harness wire.
5. STEP 5. Using scan tool MB991502, check data list item 61: Park/Neutral Position Switch. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to data reading mode for item 61: Park/Neutral Position Switch. Move the selector lever to "P," "R," "N," "D," "3," "2," "L" positions and confirm that the selected selector lever positions match the positions shown on scan tool MB991502. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the switch operating properly? YES: Check for the symptom. If the symptom is not eliminated, replace the PCM. NO: Refer to «DTC 27: PARK/NEUTRAL POSITION SWITCH SYSTEM (OPEN CIRCUIT)»(ref-183628-S35629633162005081800000) or «DTC 28: PARK/NEUTRAL POSITION SWITCH SYSTEM (SHORT CIRCUIT)»(ref-183628-S41598428242005081800000) .

1. Malfunction of the engine system
2. Malfunction of the clutch system and brake system
3. Malfunction of the PCM

Scheme 740

Scheme 741

1. STEP 1. Check the engine system. Refer to «SYMPTOMS»(ref-152079-S33931407582003011300000) . Q: Is the inspection result good? YES: Go to Step 2. NO: Repair or replace the engine component(s).
2. STEP 2. Check each brake and clutch. Perform the torque converter stall test. Refer to «TORQUE CONVERTER STALL TEST»(ref-183627-S03590984222005081800000) . Then retest the system. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 3.
3. STEP 3. Perform the hydraulic pressure test. Perform the hydraulic pressure test. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Then retest the system. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 4.
4. STEP 4. Check each brake system and each clutch system. Remove the valve body cover and valve body. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Blow 108 kPa (15 psi) compressed air into the each brake oil orifice and clutch oil orifice of the transaxle case, and check if each brake and each clutch piston move and air pressure is maintained. Q: Is the air pressure maintained? YES: The procedure is complete. NO: Go to Step 5.
5. STEP 5. Check each brake system and clutch system. Remove the transaxle. Check the facings for seizure and piston seal ring for damage and interference with retainer. Repair or replace the faulty parts. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) , «UNDERDRIVE CLUTCH AND INPUT SHAFT»(ref-183630-S42133146572005081800000) and «REVERSE AND OVERDRIVE CLUTCH»(ref-183630-S21413149042005081800000) . Then retest the system. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 6.
6. STEP 6. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

1. Abnormal torque converter clutch pressure
2. Malfunction of the engine system
3. Malfunction of the torque converter clutch solenoid
4. Malfunction of the torque converter
5. Malfunction of the valve body
6. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 742

Scheme 743

Scheme 744

1. STEP 1. Using scan tool MB991502, check actuator test item 06: Torque Converter Clutch Solenoid Valve. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Set scan tool MB991502 to actuator test mode for item 06: Torque Converter Clutch Solenoid Valve. An audible clicking or buzzing should be heard when the torque converter clutch solenoid valve is energized. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES: Go to Step 2. NO: Repair or replace the torque converter clutch solenoid valve. Refer to «VALVE BODY»(ref-183630-S00948603182005081800000) . Then confirm that the symptom is eliminated.
2. STEP 2. Check the vibration. Q: Does the vibration occur when the A/T fluid temperature sensor connector has been disconnected? YES: Check the engine system. Refer to «SYMPTOMS»(ref-152079-S33931407582003011300000) . If the inspection result is not good, diagnose, repair, and/or replace the engine component(s). NO: Go to Step 3.
3. STEP 3. Check the torque converter hydraulic pressure. Measure the torque converter hydraulic pressure. Then check if the torque converter hydraulic pressure is within the standard value. Refer to «HYDRAULIC PRESSURE TESTS»(ref-183627-S20323205022005081800000) . Q: Is the torque converter hydraulic pressure within the standard value? YES: Go to Step 4. NO: Go to Step 5 .
4. STEP 4. Replace the torque converter assembly. Remove the transaxle. Replace the torque converter assembly. Refer to «TRANSAXLE»(ref-183630-S22398195512005081800000) . Then check the symptom. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Go to Step 6 .
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»(ref-183630-S00948603182005081800000) . Replace the bulb 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 6.
6. STEP 6. Replace the PCM. Q: Is the symptom eliminated? YES: The procedure is complete. NO: Start over at Step 1 .

Scheme 745

Scheme 746

1. Malfunction of the dual pressure switch
2. Damaged harness, connector
3. Malfunction of A/C system
4. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 747

Scheme 748

Scheme 749

Scheme 750

Scheme 751

Scheme 752

Scheme 753

Scheme 754

Scheme 755

Scheme 756

Scheme 757

Scheme 758

Scheme 759

Scheme 760

Scheme 761

Scheme 762

Scheme 763

Scheme 764

Scheme 765

Scheme 766

Scheme 767

Scheme 768

Scheme 769

Scheme 770

1. STEP 1. Using scan tool MB991502, check data list item 65, Dual Pressure Switch. 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. Connect scan tool MB991502 to the data link connector. Start the engine and run at idle. Set scan tool MB991502 to data reading mode for item 65, Dual Pressure Switch. When the A/C is in operation, scan tool MB991502 display should be "ON." When the A/C is not in operation, scan tool MB991502 display should be "OFF." Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the switch operating properly? YES: It can be assumed that this malfunction is intermittent. NO: Go to Step 2.
2. STEP 2. Check dual pressure switch connector A-25 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 3. NO: Repair or replace the damaged components. .
3. STEP 3. Measure the power supply voltage at dual pressure switch connector A-25. Disconnect connector A-25 and measure at the harness side. Start the engine and run at idle. Operate the A/C. Measure the voltage between terminal 1 and ground. Voltage should measure battery positive voltage. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage battery positive voltage? YES: Go to Step 10 . NO: Go to Step 4.
4. STEP 4. Measure the power supply voltage at automatic compressor controller connector C-16 by backprobing. Do not disconnect connector C-16. Start the engine and run at idle. Operate the A/C. Measure the voltage between terminal 4 and ground by backprobing. Voltage should measure battery positive voltage. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage battery positive voltage? YES: Go to Step 8 . NO: Go to Step 5.
5. STEP 5. Check intermediate connector C-111 and automatic compressor controller connector C-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 6. NO: Repair or replace the damaged components.
6. STEP 6. Check the harness for short circuit to ground between dual pressure switch connector A-25 terminal 1 and automatic compressor controller connector C-16 terminal 4. Q: Is the harness wire in good condition? YES: Go to Step 7. NO: Repair or replace the harness wire.
7. STEP 7. Using scan tool MB991502, check data list item 65, Dual Pressure Switch. 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. Connect scan tool MB991502 to the data link connector. Start the engine and run at idle. Set scan tool MB991502 to data reading mode for item 65, Dual Pressure Switch. When the A/C is in operation, the scan tool display should be "ON." When the A/C is not in operation, the scan tool display should be "OFF." Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the switch operating properly? YES: It can be assumed that this malfunction is intermittent. NO: Check the air conditioning system. Refer to «HEATER, AIR CONDITIONING AND VENTILATION DIAGNOSTIC TROUBLESHOOTING STRAGETY»(ref-183658-S14894514242005081800000) .
8. STEP 8. Check intermediate connector C-111 and automatic compressor controller connector C-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 9. NO: Repair or replace the damaged components. .
9. STEP 9. Check the harness for open circuit between dual pressure switch connector A-25 terminal 1 and automatic compressor controller connector C-16 terminal 4. Q: Is the harness wire in good condition? YES: Go to Step 14 . NO: Repair or replace the harness wire.
10. STEP 10. Measure the switch output voltage at PCM connector C-116 by backprobing. Do not disconnect connector C-116. Start the engine and run at idle. Operate the A/C. Measure the voltage between terminal 83 and ground by backprobing. When the A/C is in operation, the voltage should measure battery positive voltage. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage battery positive voltage? YES: Go to Step 15 . NO: Go to Step 11.
11. STEP 11. Check intermediate connectors C-111, C-122 and PCM connector C-116 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 12. NO: Repair or replace the damaged components. .
12. STEP 12. Check harness for open circuit or short circuit to ground between dual pressure switch connector A-25 terminal 2 and PCM connector C-116 terminal 83. Q: Is the harness wire in good condition? YES: Go to Step 13. NO: Repair or replace the harness wire.
13. STEP 13. Check the dual pressure switch. Refer to «PRESSURE SWITCH CHECK»(ref-183658-S06177086362005081800000) . Q: Is the switch operating properly? YES: Go to Step 14. NO: Replace the dual pressure switch. Refer to GROUP 55A, «REFRIGERANT LINE»(ref-183658-S17478118022005081800000) .
14. STEP 14. Using scan tool MB991502, check data list item 65, Dual Pressure Switch. 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. Connect scan tool MB991502 to the data link connector. Start the engine and run at idle. Set scan tool MB991502 to data reading mode for item 65, Dual Pressure Switch. When the A/C is in operation, the scan tool display should be "ON." When the A/C is not in operation, the scan tool display should be "OFF." Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the switch operating properly? YES: It can be assumed that this malfunction is intermittent. NO: Replace the PCM.
15. STEP 15. Check PCM connector C-116 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 14 . NO: Repair or replace the damaged components. .

Scheme 771

1. Damaged harness, connector
2. Malfunction of the PCM
3. Malfunction of the auto-cruise control-ECU

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 772

Scheme 773

Scheme 774

Scheme 775

Scheme 776

Scheme 777

Scheme 778

Scheme 779

Scheme 780

Scheme 781

Scheme 782

Scheme 783

Scheme 784

1. STEP 1. Using scan tool MB991502, check data list item 66, Overdrive Off Signal (Auto-cruise control-ECU Signal). 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. Connect scan tool MB991502 to the data link connector. Start the engine and prepare to test drive the vehicle. (Operate the auto-cruise) Set scan tool MB991502 to data reading mode for item 66, Overdrive Off Signal (Auto-cruise control-ECU Signal). When driving at level road, the display should be "OFF." When driving at uphill road, the display should be "ON." Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES: It can be assumed that this malfunction can be intermittent. NO: Go to Step 2.
2. STEP 2. Check the auto-cruise system. Check the auto-cruise system. Refer to «AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STATEGY»(ref-169874-S39217138172004121700000) . Q: Is the auto-cruise system operating properly? YES: Go to Step 3. NO: Repair it, then check the symptom.
3. STEP 3. Measure the signal voltage at PCM connector C-116 by backprobing. Do not disconnect connector C-116. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 75 and ground by backprobing. The voltage should measure battery positive voltage. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage battery positive voltage? YES: Go to Step 6 . NO: Go to Step 4.
4. STEP 4. Check PCM connector C-116 for looser, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 5. NO: Repair or replace the damaged components. .
5. STEP 5. Check the harness for open circuit, short circuit to ground or damage between PCM connector C-116 terminal 75 and auto-cruise control-ECU connector C-107 terminal 3. Q: Is the harness wire in good condition? YES: Go to Step 6. NO: Repair or replace the harness wire.
6. STEP 6. Measure the signal voltage at auto-cruise control-ECU connector C-107 by backprobing. Do not disconnect connector C-107. Turn the ignition switch to the "ON" position. Measure the voltage between terminal 3 and ground by backprobing. The voltage should measure battery positive voltage. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the measured voltage battery positive voltage? YES: Go to Step 7. NO: Go to Step 8 .
7. STEP 7. Check auto-cruise control-ECU connector C-107 at for looser, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connector and terminals in good condition? YES: Go to Step 10 . NO: Repair or replace the damaged components. .
8. STEP 8. Check auto-cruise control-ECU connector C-107 for looser, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 9. NO: Repair or replace the damaged components. .
9. STEP 9. Check harness for short circuit to ground between PCM connector C-116 terminal 75 and auto-cruise control-ECU connector C-107 terminal 3. Q: Is the harness wire in good condition? YES: Go to Step 10. NO: Repair or replace the harness wire.
10. STEP 10. Using scan tool MB991502, check data list item 66, Overdrive Off Signal (Auto-cruise control-ECU Signal). 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. Connect scan tool MB991502 to the data link connector. Start the engine and prepare to test drive the vehicle. (Operate the auto-cruise) Set scan tool MB991502 to data reading mode for item 66, Overdrive Off Signal (Auto-cruise control-ECU Signal). When driving at level road, the display should be "OFF." When driving at uphill road, the display should be "ON." Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES: It can be assumed that this malfunction can be intermittent. NO: Replace the PCM.

Scheme 785

Scheme 786

1. Malfunction of the output shaft speed sensor
2. Malfunction of the speedometer
3. Damaged harness, connector
4. Malfunction of the PCM

Required Special Tool

1. MB991502: Scan Tool (MUT-II)

Scheme 787

Scheme 788

Scheme 789

Scheme 790

Scheme 791

Scheme 792

Scheme 793

Scheme 794

Scheme 795

Scheme 796

Scheme 797

1. STEP 1. Using scan tool MB991502, read the A/T diagnostic trouble code. 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. Connect scan tool MB991502 to the data link connector. Turn the ignition switch to the "ON" position. Check for A/T diagnostic trouble code. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is DTC 23 set? YES: Refer to «DTC 23: OUTPUT SHAFT SPEED SENSOR SYSTEM»(ref-183628-S26724880262005081800000) . NO: Go to Step 2.
2. STEP 2. Using scan tool MB991502, check data list item 29: Vehicle Speed Signal. Connect scan tool MB991502 to the data link connector. Start the engine. Set scan tool MB991502 to data reading mode for item 29, Vehicle Speed Signal. Check that the speedometer and scan tool MB991502 display speed match when driving at a vehicle speed of 40 km/h (25 mph). Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES: It can be assumed that this malfunction is intermittent. NO: Go to Step 3.
3. STEP 3. Using an oscilloscope, check the vehicle speed signal waveform at PCM connector C-116 by backprobing. Do not disconnect connector C-116. Connect an oscilloscope probe to PCM connector C-116 terminal 80 by backprobing. Start the engine and drive the vehicle. Check the vehicle speed signal waveform. The vehicle speed signal waveform should show a pattern similar to the illustration. The maximum value should be 11 volts and more and the minimum value 0.6 volt and less. The output waveform should not contain electrical noise Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the waveform normal? YES: Go to Step 4. NO: Go to Step 5 .
4. STEP 4. Check PCM connector C-116 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connector and terminals in good condition? YES: Go to Step 8 . NO: Repair or replace the damaged components. .
5. STEP 5. Check joint connector C-21, combination meter connector C-01, intermediate connector C-124 and PCM connector C-116 for loose, corroded or damaged terminals, or terminals pushed back in the connector. Q: Are the connectors and terminals in good condition? YES: Go to Step 6. NO: Repair or replace the damaged components.
6. STEP 6. Check the harness for open circuit, short circuit to ground or damage between combination meter connector C-01 terminal 12 and PCM connector C-116 terminal 80. Q: Is the harness wire in good condition? YES: Go to Step 7. NO: Repair or replace the harness wire.
7. STEP 7. Check the speedometer. Refer to Speedometer, see «SYMPTOM CHART»(ref-183240-S33749104172005081200000) . Q: Is the speedometer operating properly? YES: Go to Step 8. NO: Replace the combination meter.
8. STEP 8. Using scan tool MB991502, check data list item 29: Vehicle Speed Signal. 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. Connect scan tool MB991502 to the data link connector. Start the engine. Set scan tool MB991502 to data reading mode for item 29, Vehicle Speed Signal. Check that the speedometer and scan tool display speed match when driving at a vehicle speed of 40 km/h (25 mph). Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES: It can be assumed that this malfunction is intermittent. NO: Replace the PCM.

KEY INTERLOCK & SHIFT LOCK MECHANISMS INSPECTION PROCEDURE INDEX

TROUBLESHOOTING HINTS

1. Malfunction of lock cam
2. Malfunction of shift lock cable

1. STEP 1. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 2. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . When the brake pedal is released with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
2. STEP 2. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 3. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . When the brake pedal is released with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
3. STEP 3. Check the fit of the shift lock cable. Q: Is the shift lock cable installed correctly? YES: Go to Step 4. NO: Install the shift lock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is released with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
4. STEP 4. Check the shift lock cable. Q: Is the shift lock cable in good condition? YES: No action to be taken. NO: Replace the shift lock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is released with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.

1. Malfunction of selector lever assembly
2. Malfunction of shift lock cable
3. Malfunction of key interlock cable
4. Malfunction of transaxle control cable
5. Malfunction of lock cam

1. STEP 1. Check the connection of lock cam and key interlock cable. Q: Is the connection of lock cam and key interlock cable in good condition? YES: Go to Step 2. NO: Repair the connection of lock cam and shift lock cable. When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
2. STEP 2. Check the connection of selector lever assembly and shift transaxle control cable. Q: Is the connection of selector lever assembly and shift transaxle control cable in good condition? YES: Go to Step 3. NO: Repair the connection of selector lever assembly and shift transaxle control cable. When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
3. STEP 3. Check the fit of the shift lock cable. Q: Is the shift lock cable installed correctly? YES: Go to Step 4. NO: Install the shift lock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
4. STEP 4. Check the shift lock cable. Q: Is the shift lock cable in good condition? YES: Go to Step 5. NO: Replace the shift lock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
5. STEP 5. Check the fit of the key interlock cable. Q: Is the key interlock cable installed correctly? YES: Go to Step 6. NO: Install the key interlock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
6. STEP 6. Check the key interlock cable. Q: Is the key interlock cable in good condition? YES: Go to Step 7. NO: Replace the key interlock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
7. STEP 7. Check the fit of the transaxle control cable. Q: Is the transaxle control cable installed correctly? YES: Go to Step 8. NO: Install the transaxle control cable correctly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.
8. STEP 8. Check the transaxle control cable. Q: Is the transaxle control cable in good condition? YES: Repair or replace the selector lever assembly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position. NO: Replace the transaxle control cable. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . When the brake pedal is depressed with the ignition key at other positions than "LOCK" (OFF) position, check that the selector lever can be moved from "P" position to "R" position.

1. Malfunction of lock cam
2. Malfunction of key interlock cable

1. STEP 1. Check the connection of lock cam and key interlock cable. Q: Is the connection of lock cam and key interlock cable in good condition? YES: Go to Step 2. NO: Repair the connection of lock cam and shift lock cable. When the brake pedal is depressed with the ignition key at the "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
2. STEP 2. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 3. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . When the brake pedal is depressed with the ignition key at the "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
3. STEP 3. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 4. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . When the brake pedal is depressed with the ignition key at the "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
4. STEP 4. Check the fit of the key interlock cable. Q: Is the key interlock cable installed correctly? YES: Go to Step 5. NO: Install the key interlock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at the "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.
5. STEP 5. Check the key interlock cable. Q: Is the key interlock cable in good condition? YES: No action to be taken. NO: Replace the key interlock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . When the brake pedal is depressed with the ignition key at the "LOCK" (OFF) position, check that the selector lever can not be moved from "P" position to "R" position.

1. Malfunction of key interlock cable
2. Malfunction of shift lock cable
3. Malfunction of transaxle control cable
4. Malfunction of lock cam
5. Malfunction of selector lever assembly

1. STEP 1. Check the connection of lock cam and key interlock cable. Q: Is the connection of lock cam and key interlock cable in good condition? YES: Go to Step 2. NO: Repair the connection of lock cam and shift lock cable. Check that the selector lever can be moved from "P" position to "R" position smoothly.
2. STEP 2. Check the connection of selector lever assembly and transaxle control cable. Q: Is the connection of selector lever assembly and transaxle control cable in good condition? YES: Go to Step 3. NO: Repair the connection of selector lever assembly and transaxle control cable. Check that the selector lever can be moved from "P" position to "R" position smoothly.
3. STEP 3. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 4. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
4. STEP 4. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 5. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
5. STEP 5. Check the fit of the shift lock cable. Q: Is the shift lock cable installed correctly? YES: Go to Step 6. NO: Install the shift lock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
6. STEP 6. Check the shift lock cable. Q: Is the shift lock cable in good condition? YES: Go to Step 7. NO: Replace the shift lock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
7. STEP 7. Check the fit of the key interlock cable. Q: Is the key interlock cable installed correctly? YES: Go to Step 8. NO: Install the key interlock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
8. STEP 8. Check the key interlock cable. Q: Is the key interlock cable in good condition? YES: Go to Step 9. NO: Replace the key interlock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
9. STEP 9. Check the fit of the transaxle control cable. Q: Is the transaxle control cable installed correctly? YES: Go to Step 10. NO: Install the transaxle control cable correctly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.
10. STEP 10. Check the transaxle control cable. Q: Is the transaxle control cable in good condition? YES: Repair or replace the selector lever assembly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly. NO: Replace the transaxle control cable. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the selector lever can be moved from "P" position to "R" position smoothly.

1. Malfunction of selector lever assembly
2. Malfunction of transaxle control cable
3. Malfunction of lock cam

1. STEP 1. Check the connection of selector lever assembly and transaxle control cable. Q: Is the connection of selector lever assembly and transaxle control cable in good condition? YES: Go to Step 2. NO: Repair the connection of selector lever assembly and transaxle control cable. Check that the selector lever can be moved from "R" position to "P" position.
2. STEP 2. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 3. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "R" position to "P" position.
3. STEP 3. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 4. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "R" position to "P" position.
4. STEP 4. Check the fit of the transaxle control cable. Q: Is the transaxle control cable installed correctly? YES: Go to Step 5. NO: Install the transaxle control cable correctly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the selector lever can be moved from "R" position to "P" position.
5. STEP 5. Check the transaxle control cable. Q: Is the transaxle control cable in good condition? YES: Repair or replace the selector lever assembly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) and . Check that the selector lever can be moved from "P" position to "R" position smoothly. NO: Replace the transaxle control cable. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the selector lever can be moved from "R" position to "P" position.

1. Malfunction of lock cam
2. Malfunction of key interlock cable
3. Malfunction of transaxle control cable
4. Malfunction of steering lock cylinder assembly

1. STEP 1. Check the connection of lock cam and key interlock cable. Q: Is the connection of lock cam and key interlock cable in good condition? YES: Go to Step 2. NO: Repair the connection of lock cam and shift lock cable. Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at "P" position.
2. STEP 2. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 3. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "R" position to "P" position.
3. STEP 3. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 4. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the selector lever can be moved from "R" position to "P" position.
4. STEP 4. Check the fit of the key interlock cable. Q: Is the key interlock cable installed correctly? YES: Go to Step 5. NO: Install the key interlock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at "P" position.
5. STEP 5. Check the key interlock cable. Q: Is the key interlock cable in good condition? YES: Go to Step 6. NO: Replace the key interlock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at "P" position.
6. STEP 6. Check the fit of the transaxle control cable. Q: Is the transaxle control cable installed correctly? YES: Replace the steering lock cylinder assembly. Refer to «STEERING WHEEL AND SHAFT ASSEMBLY»(ref-183637-S42931573832005081800000) and «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at "P" position. NO: Install the transaxle control cable correctly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at "P" position.

1. Malfunction of lock cam
2. Malfunction of steering lock cylinder assembly
3. Malfunction of transaxle control cable
4. Malfunction of key interlock cable

1. STEP 1. Check the connection of lock cam and key interlock cable. Q: Is the connection of lock cam and key interlock cable in good condition? YES: Go to Step 2. NO: Repair the connection of lock cam and shift lock cable. Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.
2. STEP 2. Check the fit of the lock cam. Q: Is the lock cam installed correctly? YES: Go to Step 3. NO: Install the lock cam correctly. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.
3. STEP 3. Check the lock cam. Q: Is the lock cam in good condition? YES: Go to Step 4. NO: Replace the lock cam. Refer to «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.
4. STEP 4. Check the fit of the key interlock cable. Q: Is the key interlock cable installed correctly? YES: Go to Step 5. NO: Install the key interlock cable correctly. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.
5. STEP 5. Check the key interlock cable. Q: Is the key interlock cable in good condition? YES: Go to Step 6. NO: Replace the key interlock cable. Refer to «A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS»(ref-183626-S09896576822005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.
6. STEP 6. Check the fit of the transaxle control cable. Q: Is the transaxle control cable installed correctly? YES: Replace the steering lock cylinder assembly. Refer to «STEERING WHEEL AND SHAFT ASSEMBLY»(ref-183637-S42931573832005081800000) and «DISASSEMBLY AND ASSEMBLY»(ref-183626-S25331615882005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position. NO: Install the transaxle control cable correctly. Refer to «TRANSAXLE CONTROL»(ref-183626-S08056907402005081800000) . Check that the ignition key can not be turned to the "LOCK" (OFF) position with the selector lever at any position other than "P" position.