Problem Symptoms Table [09/2014 - 11/2017]
WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- The problem symptoms table is divided into 2 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to 2, proceed as instructed.
- If the instruction "Proceed to Next Suspected Area Shown in Problem Symptoms Table" is given in the flowchart for a circuit, proceed to the next suspected area in the table.
- If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
- *1: When the circuit is defective, a DTC may be stored.
1. CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
2. CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
| Symptom | Suspected Area | Link |
|---|---|---|
| Vehicle does not move in any forward position and reverse positions | Transmission control rod | Refer to ADJUSTMENT [09/2014 - ] |
| Manual valve | Refer to COMPONENTS [09/2014 - ] | |
| Parking lock pawl | Refer to COMPONENTS [09/2014 - ] | |
| Rear planetary gear unit | Refer to COMPONENTS [09/2014 - ] | |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] | |
| Vehicle does not move with the shift lever in R | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 4 brake (B4) | Refer to COMPONENTS [09/2014 - ] | |
| No up-shift (1st -> 2nd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 3 brake (B3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 2 one-way clutch (F2) | Refer to COMPONENTS [09/2014 - ] | |
| No up-shift (2nd -> 3rd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| No up-shift (3rd -> 4th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] | |
| No up-shift (4th -> 5th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 1 brake (B1) | Refer to COMPONENTS [09/2014 - ] | |
| No up-shift (5th -> 6th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 2 brake (B2) | Refer to COMPONENTS [09/2014 - ] | |
| No down-shift (6th -> 5th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No down-shift (5th -> 4th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No down-shift (4th -> 3rd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No down-shift (3rd -> 2nd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No down-shift (2nd -> 1st) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No lock-up or No lock-up off | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] | |
| Harsh engagement (N -> D) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| C1 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 clutch (C1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 one-way clutch (F3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 one-way clutch (F4) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (Lock-up) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] | |
| Harsh engagement (N -> R) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| C3 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 brake (B4) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th -> 6th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Harsh engagement (1st -> 2nd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| B3 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 brake (B3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 2 one-way clutch (F2) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (2nd -> 3rd) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| C3 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (3rd -> 4th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| C2 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (4th -> 5th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| B1 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 brake (B1) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (5th -> 6th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| B2 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 2 brake (B2) | Refer to COMPONENTS [09/2014 - ] | |
| Harsh engagement (6th -> 5th) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| C3 accumulator | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (Forward and reverse: After warm-up) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Oil strainer | Refer to REMOVAL [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] | |
| Slip or shudder (Particular position: Just after engine starts) | Torque converter assembly | Refer to INSPECTION [09/2014 - ] |
| Slip or shudder (R position) | No. 4 Brake (B4) | Refer to COMPONENTS [09/2014 - ] |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (1st) | No. 1 clutch (C1) | Refer to COMPONENTS [09/2014 - ] |
| No. 3 one-way clutch (F3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 one-way clutch (F4) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (2nd) | No. 1 clutch (C1) | Refer to COMPONENTS [09/2014 - ] |
| No. 3 brake (B3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 2 one-way clutch (F2) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 one-way clutch (F4) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (3rd) | No. 1 clutch (C1) | Refer to COMPONENTS [09/2014 - ] |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 one-way clutch (F1) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 one-way clutch (F4) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (4th) | No. 1 clutch (C1) | Refer to COMPONENTS [09/2014 - ] |
| No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] | |
| No. 4 one-way clutch (F4) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (5th) | No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] |
| No. 3 clutch (C3) | Refer to COMPONENTS [09/2014 - ] | |
| No. 1 brake (B1) | Refer to COMPONENTS [09/2014 - ] | |
| Slip or shudder (6th) | No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] |
| No. 2 brake (B2) | Refer to COMPONENTS [09/2014 - ] | |
| No engine braking (1st +- 4th: M position) | No. 4 clutch (C4) | Refer to COMPONENTS [09/2014 - ] |
| No engine braking (1st: 1 position) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 4 brake (B4) | Refer to COMPONENTS [09/2014 - ] | |
| No engine braking (2nd: 2 position) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 2 brake (B2) | Refer to COMPONENTS [09/2014 - ] | |
| No engine braking (3rd: 3 position) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No. 1 brake (B1) | Refer to COMPONENTS [09/2014 - ] | |
| No engine braking (4th: 4 position) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| No kick-down | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Shift point too high or too low | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Poor acceleration (All positions) | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] | |
| Poor acceleration (6th) | No. 2 brake (B2) | Refer to COMPONENTS [09/2014 - ] |
| No. 2 clutch (C2) | Refer to COMPONENTS [09/2014 - ] | |
| Front planetary gear unit | Refer to COMPONENTS [09/2014 - ] | |
| Engine stalls when starting off or stopping | Transmission valve body assembly | Refer to REMOVAL [09/2014 - ] |
| Torque converter assembly | Refer to INSPECTION [09/2014 - ] |