DESCRIPTION
This circuit detects the ignition switch ON 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 |
---|---|---|---|
IG SW |
Ignition switch ON signal / ON or OFF |
ON: Ignition switch ON 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-32 (IG) - Body ground |
Ignition switch ON |
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 |
Illumination Circuit
DESCRIPTION
Power is supplied to the radio and display receiver assembly and steering pad
switch illumination when the light control switch is in the tail or head position.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for c ...
Short in Driver Side Squib 2nd Step Circuit (B1810/53-B1813/53)
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor,
spiral cable and steering pad.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the ...