IG Signal Circuit

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: IG Signal Circuit
- IG Signal Circuit

DESCRIPTION

The multiplex network body ECU determines the ignition position (off, on (ACC, IG)) based on signals from the IG or ACC circuit.

Signals from the unlock warning switch are used to operate wireless door lock control system functions such as automatic lock and door ajar warning.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Start the inspection from step 1 when using the Techstream and start from step 2 when not using the Techstream.

PROCEDURE

1. READ VALUE ON TECHSTREAM (IGNITION SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch on (IG) and turn the Techstream main switch on.

(c) Select the items below in the "DATA LIST" and read the display on the Techstream.

BODY:





OK:

When the ignition switch is operated, the display changes as shown above.

NG -- INSPECT MULTIPLEX NETWORK BODY ECU (IG - ACC TERMINALS)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT MULTIPLEX NETWORK BODY ECU (IG - ACC TERMINALS)

(a) Turn the ignition switch off.





(b) Disconnect the instrument panel J/B (II) connector.

(c) Measure the voltage according to the value(s) in the table below.

Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IG OR ACC CIRCUIT)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE