Theft Deterrent System (W/O Entry And Start System) Ignition Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER
CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL J/B)
INSPECT IGNITION OR STARTER SWITCH ASSEMBLY
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B - INSTRUMENT PANEL J/B)
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B - BODY GROUND)
THEFT DETERRENT SYSTEM (w/o Entry and Start System) - Ignition Switch Circuit |
DESCRIPTION
The main body ECU determines the ignition position (OFF, ACC, ON) based on signals from the IG or ACC circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
1.READ VALUE USING INTELLIGENT TESTER |
Connect the intelligent tester (with CAN VIM) to the DLC3.
Turn the ignition switch to the ON position.
Turn the intelligent tester main switch on.
Select the item below in the Data List and read the display on the intelligent tester.
MAIN BODY (Main Body ECU):Item
| Test Details
| Diagnostic Note
|
IG SW
| ignition switch ON signal ON/OFF
| -
|
ACC SW
| ignition switch ACC signal ON/OFF
| -
|
- OK:
- When the ignition switch is operated, the display changes as shown in the table.
OK |
|
|
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PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
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2.CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL J/B) |
Disconnect the IA J/B connector.
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
IA-1 - Body ground
| Ignition switch ON
| 10 to 14 V
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3.INSPECT IGNITION OR STARTER SWITCH ASSEMBLY |
Disconnect the E23 switch connector from the ignition switch.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
1 - 4
| Ignition switch ON
| Below 1 Ω
|
2 - 4
| Ignition switch ACC
| Below 1 Ω
|
| REPLACE IGNITION OR STARTER SWITCH ASSEMBLY |
|
|
4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B - INSTRUMENT PANEL J/B) |
Disconnect the II J/B connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
II-4 - II-9
| Ignition switch ON
| Below 1 Ω
|
II-4 - II-3
| Ignition switch ACC
| Below 1 Ω
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B - BODY GROUND) |
Disconnect the IF J/B connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Specified Condition
|
IF-10 - Body ground
| Below 1 Ω
|
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
OK |
|
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REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
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