Contents Wiring diagrams Section: Door Locks & Anti-Theft Systems All sections

Key Warning System: Overview Subaru BRZ ZC

Door Locks & Anti-Theft Systems 4 illustrations ~448 words

Scheme 194

Scheme 194: Parts Location

Scheme 195

Scheme 195

Scheme 196

Scheme 196: System Diagram

Description Of Functions

  1. Details of key warning system If the driver's door is opened with the ignition key at ACC or lock position, the key warning buzzer sounds to alert the driver to the key left inserted.

Operation Check

  1. Function inspection Check that the key warning buzzer sounds. Insert a key in the ignition key cylinder with the driver's door closed and turn the key to the lock position or ACC. Check that the buzzer sounds periodically when the driver's door is opened. Check that the key warning buzzer stops sounding. Check that the buzzer stops sounding if the following operations are performed while the buzzer is sounding: Driver's door is closed. (Front door courtesy light switch is OFF) Turn IG SW to ON. Remove the key from the ignition key cylinder.

Current Data Display & Save / System Operation Check Mode

  1. Read data list CAUTION: The values indicated under the normal conditions in the table below are informative values. Do not depend on reference value only when judging if the part is faulty. NOTE: By using the SSM3 for reading the data list, it is able to read the values and the status of the switches, sensors, or actuators without removing these parts. This inspection is very useful because it allows an operator to read any intermittent conditions or signals without disturbing parts or wiring. By reading the current data display & save information at an initial phase of troubleshooting, you can save time for diagnosis. Turn IG SW to OFF. Connect the SSM3 to the DLC3. Turn IG SW to ON. Turn on the SSM3. Enter the following menus. [Integ. unit mode] -->[Current Data Display & Save] Using SSM3, read the data list according to the screen displays. MAIN BODY Item Name Description/display range Normal condition Remarks [Ignition] Ignition switch signal / ON or OFF OFF: IG SW OFF ON: IG SW ON - [ACC SW] Ignition switch ACC signal / ON or OFF OFF: IG SW OFF ON: IG SW ACC - [Key Unlock Warning SW] Unlock warning switch / OFF or ON OFF: Ignition key is not inserted ON: Ignition key is inserted - [D Door Courtesy] Driver's door courtesy light switch signal / ON or OFF ON: Driver's door is closed OFF: Driver's door is open

If the driver's door is opened while the ignition switch is set at the lock position or ACC, the key reminder warning buzzer sounds. When the main body ECM (multiplex network body computer) transmits a key switch signal and driver's courtesy light switch signal to the combination meter assembly, the key reminder warning buzzer operates.

Scheme 197

Scheme 197: Circuit figure