Warning! The models covered by this manual are equipped with a Supplemental Restraint System (SRS), commonly known as the air bag system. To prevent accidental air bag deployment, which could result in injury, be sure to disable the air bag system before working near air bag components (see chapter 12). Do not use an uninterruptible power supply to save the PCM memory contents or audio system settings when working on or near air bag system components.
Description
1. The Brake Pedal Sensing Shift Interlock (BTSI) system includes two solenoid devices. One is mounted near the ignition key cylinder and the other is mounted on the selector lever assembly under the center console. The solenoid mounted on the selector lever also has a shift interlock module that receives information from the brake pedal switch sensor and the transmission range (TR) sensor to properly activate the key removal interlock solenoid (on the ignition lock cylinder), and the gearshift lock module (on the selector lever console). The shift interlock module locks the selector lever in the P position when the ignition switch is in the LOCK position. When the ignition switch is in the RUN position, the locking solenoid is activated. When the system is operating correctly, the only way to release the selector lever lock and move the lever out of the P position is to apply the brake pedal. The BTSI system also prevents the ignition switch from being turned to the LOCK position unless the selector lever is fully moved to the PARK (P) position.
Examination
2. Make sure that the key can only be removed from the ignition switch in position P.
3. When the selector lever is in the P position, it should be possible to turn the ignition switch from the OFF position to the LOCK position. However, when the lever is in any position other than P (including neutral position), it should not be possible to turn the ignition key to the LOCK position.
4. When the ignition key is in the OFF position, it must be impossible to move the selector lever from the P position.
5. When the ignition key is in the RUN or START position, it must be impossible to move the selector lever from the P position unless the brake pedal is depressed.
6. When the ignition key is in the accessory (ACC) or lock (LOCK) position, it should be impossible to move the selector lever from the P position.
7. After engaging a gear, with the ignition key in the RUN position, it must be possible to move the selector lever between gears or move it to the neutral position without pressing the brake pedal.
6. If the BTSI system does not work as described, try adjusting it as described below.
Replacement
9. Disconnect the ground cable from the battery (see paragraph 1 of chapter 5).
Key extraction lock solenoid
10. Remove the steering column covers.
11. Access the ignition lock cylinder and disconnect the electrical connector from the key extraction interlock solenoid.
12. Loosen the screws securing the key extraction lock solenoid (Fig. 5.12) and separate the solenoid from the ignition lock cylinder.
Fig. 5.12. Location of screws for fastening the key extraction lock electromagnet
13. Installation is performed in the reverse order of removal.
Gear Shift Lock Module
Highlander and RX 300 models 1999-2003.
14. Remove the selector lever assembly (see paragraph 4).
15. Disconnect the console light electrical connector (Fig. 5.15).
Fig. 5.15. Turn the console light connector counterclockwise and remove it from the side of the range indicator base
16. Disconnect the overdrive wiring harness pins from the main electrical connector (Fig. 5.16).
Fig. 5.16. Using a watchmaker's screwdriver, separate pins 1 and 4 from the back of the electrical connector and remove the two-wire wiring harness
17. Unscrew the two mounting screws and remove the handle from the selector lever (Fig. 5.17).
Fig. 5.17. Remove the two mounting screws and remove the handle from the selector lever
18. Unscrew the screws securing the base of the cover of the selected range indicator (Fig. 5.18).
Fig. 5.18. Check the screws that secure the base of the covers of the indicator of the selected range
19. Remove the screws securing the gearshift lock module (Fig. 5.19) and separate the module from the unit.
Fig. 5.19. Location of the gearshift lock module mounting screws (shown is the 2001 Highlander model, similar for other models)
20. Installation is performed in the reverse order of removal.
RX 330 Models 2004 and Later
21. Remove the selector lever assembly (see paragraph 4).
22. Remove the console light connector.
23. Remove the cover of the selected range indicator.
24. Remove the lower section of the selected range indicator housing.
25. In the case of a multi-mode type selector lever, separate the wiring harness pins from the main electrical connector (Fig. 5.25).
Fig. 5.25. Using a watchmaker's screwdriver, separate pins 1 and 6 from the back of the connectors and remove the wiring harness
26. Remove the gearshift lock module mounting screws and separate the module from the unit.
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27. Installation is performed in the reverse order of removal.
Transmission Range (TR) Sensor
28. The transmission range sensor has a built-in Park (P)/Neutral (N) detection function, as well as a backup light switch and a source of information to the PCM about the range selected in the transmission. The Park/Neutral detection function prevents the engine from starting in any range other than P or N. If the engine starts with the selector lever in a position other than P or N, adjust the switch. In addition, the transmission range sensor/switch is a source of information for the electronically controlled transmission. When the selector lever is moved to the P or N position, this sensor sends a voltage signal to the PCM. For replacement procedures, refer to chapter 6.
Shift Lock Override Function
29. In the event that the brake-sensitive shift interlock (BTSI) system fails and the selector lever cannot be moved out of the engaged gear position, the system is equipped with an override function. The BTSI system can then be bypassed and the selector lever can be used manually with the parking brake applied and the engine switched off.
30. Locate the cancel button on the center console next to the selector lever (Fig. 5.30), carefully pry and remove the protective cover, turn the ignition switch to the LOCK position, press the cancel button and move the selector lever to the neutral position.
Fig. 5.30. Location of the shift lock override button on the 2001 Highlander.; on other models it is similar