THEFT DETERRENT SYSTEM (w/ Smart Entry and Start System) TERMINALS OF ECU

CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

1. 

   Disconnect the main body ECU (instrument panel junction block) connectors.

2. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

   Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
   D6-7 (RCTY) - Body ground	GR - Body ground	Rear courtesy light switch RH input	Rear door RH CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω
   D6-21 (PCTY) - Body ground	SB*1 - Body ground	Passenger side courtesy light switch input	Passenger side door CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω
   	G*2 - Body ground
   D6-25 (BCTY) - Body ground	L - Body ground	Back door courtesy light switch input	Back door CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω
   D7-24 (DCTY) - Body ground	G*1 - Body ground	Driver side door courtesy light switch input	Driver side door CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω
   	SB*2 - Body ground
   D9-8 (GHSW) - Body ground	O - Body ground	Glass hatch courtesy switch	Glass hatch CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω
   1A-1 (ACC) - Body ground	B - Body ground	Ignition power supply (ACC signal)	Engine switch ON (ACC) → OFF	11 to 14 V → Below 1 V
   1A-1 (IG) - Body ground	B - Body ground	Ignition power supply (IG signal)	Engine switch ON (IG) → OFF	11 to 14 V → Below 1 V
   1D-16 (ALTB) - Body ground	W - Body ground	+B (power system alternator system) power supply	Always	11 to 14 V
   1F-10 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   1M-9 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   1O-7 (LCTY) - Body ground	B - Body ground	Rear courtesy light switch LH input	Rear door LH CLOSED (OFF) → OPEN (ON)	10 kΩ or higher → Below 1 Ω

   Tip:
   

   • *1: for LHD

   • *2: for RHD

   • If the result is not as specified, there may be a malfunction on the wire harness side.

3. Reconnect the main body ECU (instrument panel junction block) connectors.

4. Measure the voltage between each terminal of the wire harness side connectors and body ground.

   Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
   D8-4 (HAZ) - Body ground	O - Body ground	Turn signal flasher relay signal	System is in alarm sounding state	Below 1 V
   1D-11 (HORN) - Body ground	GR - Body ground	Vehicle horn drive	Vehicle horn is sounding (Theft deterrent system is in alarm sounding state)	Pulse generation (Below 1 V ← → 12 V)

   If the result is not as specified, the main body ECU (instrument panel junction block) may have a malfunction.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) ASSEMBLY

1. Disconnect the D35 and D36 ECU connectors.

2. 

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

   Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
   D35-24 (HSW) - Body ground	R - Body ground	Engine hood courtesy switch	Engine hood CLOSED (OFF) → OPEN (ON)	Below 1 Ω → 10 kΩ or higher
   D36-1 (+B) - D36-17 (E)	B - B	Battery power supply	Always	11 to 14 V
   D36-17 (E) - Body ground	B - Body ground	Ground	Always	Below 1 Ω

   If the result is not as specified, there may be a malfunction on the wire harness side.

3. Reconnect the D35 and D36 ECU connectors.

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

   Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
   D35-20 (SH-) - Body ground	W - Body ground	Security horn drive	Security horn is sounding (Theft deterrent system is in alarm sounding state)	Pulse generation (Below 1 V ← → 12 V)
   D36-2 (IND) - Body ground	W - Body ground	Security indicator light output	Security indicator light is on (It comes on only in alarm sounding state. It flashes when immobiliser is operating.)	3 to 6 V

   If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.