Contents: Checking the key lock solenoid in…↓ Testing the Shift Lock Solenoid on…↓ Checking the selector lever position…↓ Control unit of the blocking system ↓
Warning! Vehicles are equipped with safety systems (SRS), including airbags and seat belt tensioners. Before working near the impact sensors, instrument panel and steering column, first disconnect the negative and then the positive terminals from the battery and wait about two minutes. This will prevent unauthorized deployment of airbags and seat belt tensioners, which could cause injury.
Figure 9.25. Selector lever and ignition lock system on 1996 and 1997 models: 1 – key lock solenoid in the ignition switch; 2 – brake light switch; 3 – selector lever lock solenoid; 4 – selector lever position control switch; 5 – control unit of the locking system; 6 – button
Figure 9.26. Selector lever and ignition lock system on models from 1998 to 2001: 1 – brake light switch; 2 – key lock solenoid in the ignition switch; 3 – control unit of the locking system
Figure 9.27. Selector lever and ignition lock system on models from 2001: 1 – key lock solenoid in the ignition switch; 2 – brake light switch; 3 – control unit of the locking system
The selector lever and ignition lock system prevents the selector lever from being moved from the "P" and "N" positions unless the brake pedal is depressed (figures 9.25, 9.26, 9.27). It is also impossible to remove the key from the ignition switch if the selector lever is not returned to its original position.
Checking the key lock solenoid in the ignition switch
Remove the steering column cover.
Disconnect the electrical connector from the key interlock solenoid in the ignition switch.
Using an ohmmeter, measure the resistance of the solenoid winding, which should be within 12.5–16.5 ohms.
Using additional wires, briefly apply battery voltage to the solenoid coil contacts; it should make a clicking sound. Do not apply voltage for a long time, as the solenoid may be damaged.
If any of the tests fail, replace the solenoid.
Testing the Shift Lock Solenoid on 1996 and 1997 Model Years
Remove the center console.
Disconnect the electrical connector from the selector lever lock solenoid.
Using an ohmmeter, measure the resistance of the solenoid winding, which should be within 26–33 ohms.
Using additional wires, briefly apply battery voltage to the solenoid coil contacts; it should make a clicking sound. Do not apply voltage for a long time, as the solenoid may be damaged
If any of the tests fail, replace the solenoid.
Checking the selector lever position control switch on 1996 and 1997 models
Figure 9.28. Connecting the ohmmeter probes when checking the selector lever position switch: P1, P, P2 – switch contacts
Disconnect the electrical connector from the switch and use an ohmmeter to measure the resistance between the contacts in each selector lever position (Fig. 9.28). The switch states are listed in Table 9.4.
If the resistance between the contacts does not meet the requirements, replace the switch.
Control unit of the blocking system
If the above components are working properly and the locking system is not working properly, the locking system control unit is likely faulty and needs to be replaced. However, before replacing the unit, check the electrical circuits between the components of the locking system for open circuits and short circuits.