Toyota Tundra (2015 year). Manual — part 2322
Last Modified: 9-16-2014
6.6 U
Doc ID: RM000002YKU02AX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: DOOR LOCK: KEY REMINDER WARNING SYSTEM: SYSTEM DIAGRAM; 2015 MY Tundra [08/2014 - ]
SYSTEM DIAGRAM
Communication table:
SENDER
RECEIVER
SIGNAL
LINE
Main Body ECU
Combination Meter
Front Door Courtesy Light Switch
CAN
Main Body ECU
Combination Meter
Unlock Warning Switch
CAN
DOOR LOCK: KEY REMINDER WARNING SYSTEM: SYSTEM DI...
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000002YKS02BX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: DOOR LOCK: KEY REMINDER WARNING SYSTEM: SYSTEM DESCRIPTION; 2015 MY Tundra [08/2014 -
]
SYSTEM DESCRIPTION
1. KEY REMINDER WARNING SYSTEM DESCRIPTION
(a) When the driver side door is opened with the ignition key in the ACC or LOCK position, this system causes a
buzzer to sound in order to warn the driver that the ignition key has not been removed.
2. FUNCTION OF MAIN COMPONENT
COMPONENT
FUNCTION
Front Door
Courtesy Switch LH
Detects front door status (open or closed) and outputs signal to main body ECU
Unlock Warning
Switch
Detects if key is inserted into ignition key cylinder or not and outputs signal to main body
ECU
Combination Meter
Receives buzzer request signal from main body ECU after main body ECU receives ignition
switch signal and front door courtesy light switch signal, and actuates inner circuit to sound
built-in buzzer intermittently
DOOR LOCK: KEY REMINDER WARNING SYSTEM: SYSTEM DES...
NEXT
NEXT
Last Modified: 9-16-2014
6.6 D
Doc ID: RM000002YKM02QX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: DOOR LOCK: KEY REMINDER WARNING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2015 MY
Tundra [08/2014 - ]
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Use the following procedures to troubleshoot the key reminder warning system.
*: Use the Techstream.
1.
VEHICLE BROUGHT TO WORKSHOP
2.
INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
3.
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Result
RESULT
PROCEED TO
CAN DTC is not output
A
CAN DTC is output
B
B
Go to CAN COMMUNICATION
DOOR LOCK: KEY REMINDER WARNING SYSTEM: HOW TO PR...
A
A
NEXT
NEXT
4.
PROBLEM SYMPTOMS TABLE
Result
RESULT
PROCEED TO
Fault is not listed in problem symptoms table
A
Fault is listed in problem symptoms table
B
B
Go to step 6
5.
OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) Operation Check
6.
REPAIR OR REPLACE
7.
CONFIRMATION TEST
NEXT
END
DOOR LOCK: KEY REMINDER WARNING SYSTEM: HOW TO PR...
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