AFS ECU Power Source Circuit

DESCRIPTION

This circuit detects the state of the engine switch. The AFS ECU receives it from the engine switch.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. INSPECT AFS ECU

1. Measure the voltage of the connector.

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   A27-1 (E1) - A27-2 (IG)	Engine switch off	Below 1 V
   A27-1 (E1) - A27-2 (IG)	Engine switch on (IG)	10 to 14 V

NG	Go to step 2

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. CHECK WIRE HARNESS (AFS ECU - BODY GROUND)

1. Disconnect the A27 connector.

2. Measure the resistance of the wire harness side connector.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A27-1 (E1) - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - BODY GROUND)

OK

3. INSPECT AFS ECU

1. Disconnect the A27 connector.

2. Measure the voltage of the connector.

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   A27-1 (E1) - A27-2 (IG)	Engine switch on (IG)	10 to 14 V

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - BATTERY)

OK
REPLACE AFS ECU