TAIL GATE CLOSER SYSTEM, Diagnostic DTC:B225D

DESCRIPTION

The No. 2 main body ECU receives the half-latch switch, pawl switch and lower tail gate courtesy switch signals from the lower tail gate lock LH and detects the open/closed status of the lower tail gate. DTC B225D is stored when the ECU receives a half-latch switch, pawl switch or lower tail gate courtesy switch malfunction signal from the lower tail gate lock LH.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (HALF-LATCH SWITCH, POLE SWITCH AND COURTESY SWITCH)

   
   

   1. Check the Data List for proper functioning of the half-latch switch, pawl switch and lower tail gate courtesy switch.

      Body No.4

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Half Latch Switch LH	Half-latch switch signal/ON or OFF	ON: Lower tail gate open OFF: Lower tail gate closed	-
      Courtesy Switch LH	Lower tail gate courtesy switch LH signal/ON or OFF	ON: Lower tail gate open OFF: Lower tail gate closed	-
      Luggage Pawl switch	Pawl switch signal/ON or OFF	ON: Lower tail gate lock motor operating OFF: Lower tail gate open or close	-

      OK
      The display is as specified in the normal condition.

   
   

   NG

   INSPECT LOWER TAIL GATE LOCK ASSEMBLY LH Click here

   OK

2. CHECK DTC OUTPUT

   
   

   1. Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

   2. Check for DTCs Click here.

   3. Clear the DTCs Click here.

   4. Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

   5. Recheck for DTCs Click here.

      OK
      DTC B225D is not output.

   
   

   NG

   REPLACE NO. 2 MAIN BODY ECU Click here

   OK

   USE SIMULATION METHOD TO CHECK Click here

3. INSPECT LOWER TAIL GATE LOCK ASSEMBLY LH

   

   
   

   1. Remove the lower tail gate lock LH Click here.

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

      Standard Resistance
      Lower Tail Gate Courtesy Switch Tester Connection Condition Specified Condition 2 (FUL) - 3 (E1) Over-latch 10 kΩ or higher 2 (FUL) - 3 (E1) Full-latch 10 kΩ or higher 2 (FUL) - 3 (E1) Half-latch Below 1 Ω 2 (FUL) - 3 (E1) Open-latch Below 1 Ω

      Half-latch Switch
      Tester Connection Condition Specified Condition 1 (HAF) - 3 (E1) Over-latch 10 kΩ or higher 1 (HAF) - 3 (E1) Full-latch Below 1 Ω 1 (HAF) - 3 (E1) Half-latch 10 kΩ or higher 1 (HAF) - 3 (E1) Open-latch Below 1 Ω

      Pawl switch
      Tester Connection Condition Specified Condition 4 (POL) - 3 (E1) Over-latch 10 kΩ or higher 4 (POL) - 3 (E1) Full-latch Below 1 Ω 4 (POL) - 3 (E1) Half-latch Below 1 Ω 4 (POL) - 3 (E1) Open-latch 10 kΩ or higher

   
   

   NG

   REPLACE LOWER TAIL GATE LOCK ASSEMBLY LH Click here

   OK

4. CHECK HARNESS AND CONNECTOR (LOCK - ECU AND BODY GROUND)

   

   
   

   1. Disconnect the f3 lock connector.

   2. Disconnect the L33 and L34 ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition f3-1 (HAF) - L34-9 (HAF) Always Below 1 Ω f3-2 (FUL) - L34-4 (FUL) Always Below 1 Ω f3-4 (POL) - L33-15 (POL) Always Below 1 Ω f3-3 (E1) - Body ground Always Below 1 Ω f3-1 (HAF) - Body ground Always 10 kΩ or higher f3-2 (FUL) - Body ground Always 10 kΩ or higher f3-4 (POL) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE NO. 2 MAIN BODY ECU Click here