Engine Switch Indicator Circuit

DESCRIPTION

Engine start conditions or system malfunctions can be checked by the status of the engine switch indicator light.

Engine switch indicator light condition: 

Power Source Mode/Condition	Indicator Light Condition
	Brake pedal released (A/T) Clutch pedal released (M/T)	Brake pedal depressed, shift lever in P or N (A/T)	Brake pedal depressed (M/T)
off	OFF	Illuminates ON (Green)	Illuminates ON (Green)
on (ACC, IG)	Illuminates ON (Amber)	Illuminates ON (Green)	Illuminates ON (Green)
Engine running	OFF	OFF	OFF
Steering lock not unlocked	Flashes (Green) for 30 sec.	Flashes (Green) for 30 sec.	Flashes (Green) for 30 sec.
System malfunction	Flashes (Amber) for 15 sec.	Flashes (Amber) for 15 sec.	Flashes (Amber) for 15 sec.
Clutch start switch malfunction (M/T)	Flashes (Green) for 15 sec.	Flashes (Green) for 15 sec.	Flashes (Green) for 15 sec.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. INSPECT ENGINE SWITCH

1. Remove the engine switch.
   

2. Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch.

   NOTICE:

   1. If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator does not illuminate.
      
   2. If the voltage is too low, the indicator will not illuminate.
      

   OK:

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 11 (SWIL) Battery negative (-) → Terminal 4 (COM) or 5 (GND)	Illuminates
   Battery positive (+) → Terminal 12 (INDS) Battery negative (-) → Terminal 4 (COM) or 5 (GND)	Illuminates
   Battery positive (+) → Terminal 13 (INDW) Battery negative (-) → Terminal 4 (COM) or 5 (GND)	Illuminates

NG	REPLACE ENGINE SWITCH

OK

2. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND)

1. Disconnect the J31 switch connector.

2. Disconnect the J55 ECU connector.

3. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   J31-11 (SWIL) - J55-36 (SWIL)	Always	Below 1 Ω
   J31-12 (INDS) - J55-4 (INDS)	Always	Below 1 Ω
   J31-13 (INDW) - J55-13 (INDW)	Always	Below 1 Ω
   J31-5 (GND) - Body ground	Always	Below 1 Ω
   J31-4 (COM) - Body ground	Always	Below 1 Ω
   J31-11 (SWIL) or J55-36 (SWIL) - Body ground	Always	10 kΩ or higher
   J31-12 (INDS) or J55-4 (INDS) - Body ground	Always	10 kΩ or higher
   J31-13 (INDW) or J55-13 (INDW) - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE POWER SOURCE CONTROL ECU