DESCRIPTION
This circuit detects the ignition switch ACC or off condition, and sends it to the main body ECU.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (IGNITION SWITCH) |
(a) Using the Techstream, read the Data List (See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
ACC SW |
Ignition switch ACC signal / ON or OFF |
ON: Ignition switch ACC OFF: Ignition switch off |
- |
OK:
Normal conditions listed above are displayed.
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU) |
(a) Remove the main body ECU (See page ). |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A-29 (ACC) - Body ground |
Ignition switch ACC |
11 to 14 V |
*a |
Front view of wire harness connector (to Main Body ECU) |
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Initialization
INITIALIZATION
1. ZERO POINT CALIBRATION
NOTICE:
Make sure that the front passenger seat is not occupied before performing the
operation.
HINT:
Perform the zero point calibration and sensitivity check if any of the following
conditions apply.
...
If the electronic key does not operate properly (vehicles with a smart key
system)
If communication between the electronic key and vehicle is interrupted
or the electronic key cannot be used because the battery is depleted, the smart
key system and wireless remote control cannot be used. In such cases, the doors
can be opened and ...