SFI SYSTEM(w/o Canister Pump Module) MIL Circuit
DTC Code | DTC Name |
---|---|
MIL Circuit |
DESCRIPTION
The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM. When the ignition switch is turned to ON, power is supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.
The MIL operation can be checked visually: When the ignition switch is turned to ON, the MIL should be illuminated and should turn off after engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
CHECK THAT MIL IS ILLUMINATED
Perform troubleshooting in accordance with the table below.
Result
Result
Proceed to
MIL remains ON
A
MIL does not illuminate
B
B CHECK THAT MIL IS ILLUMINATEDClick here
CHECK DTC OUTPUT RECURS
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Check if any DTCs have been detected. Note down any DTCs.
Powertrain > Engine and ECT > Trouble Codes
Result
Result
Proceed to
No DTC detected
A
Any DTCs detected
B
Tip:Check for detected DTCs output from other ECUs which relate to the MIL.
B REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)
-
*a
Front view of wire harness connector
(to ECM)
Disconnect the ECM connector
Turn the ignition switch to ON.
Check that the MIL is not illuminated.
OK
MIL is not illuminated.
Result
Proceed to
OK
NG
-
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
Disconnect the combination meter assembly connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
A62-30 (W) or G16-11 (CHK) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK THAT MIL IS ILLUMINATED
Check if the MIL is illuminated when the ignition switch is turned to ON.
OK
MIL should be illuminated.
Result
Proceed to
OK
NG
CHECK THAT ENGINE STARTS
Turn the ignition switch to ON.
Start the engine.
Result
Result
Proceed to
Engine starts
A
Engine does not start*
B
Tip:*: The GTS cannot communicate with the ECM.
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
Disconnect the combination meter assembly connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
A62-30 (W) - G16-11 (CHK)
Always
Below 1 Ω
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR