Toyota 4Runner manuals

Toyota 4Runner: Position Initialization Incomplete (B2343)

DESCRIPTION

This DTC is stored when the sliding roof drive gear sub-assembly (sliding roof ECU) has not been initialized.

DTC Code

DTC Detection Condition

Trouble Area

B2343

The sliding roof drive gear sub-assembly (sliding roof ECU) has not been initialized.

  • Sliding roof drive gear sub-assembly (Sliding roof ECU)
  • Map light assembly (Sliding roof switch)
  • Harness or connector

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

When the sliding roof drive gear sub-assembly (sliding roof ECU) is removed and reinstalled or replaced, the sliding roof drive gear sub-assembly (sliding roof ECU) must be initialized (See page ).


PROCEDURE

1.

INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY

(a) Check that the sliding roof drive gear sub-assembly (sliding roof ECU) can be initialized (See page ).


OK:

The sliding roof drive gear sub-assembly can be initialized.


NG

GO TO STEP 3


OK

2.

CHECK FOR DTC

(a) Clear the DTCs (See page ).


(b) Check for DTCs (See page ).


Result

Result

Proceed to

DTC is not output

A

DTC B2343 is output

B


A

END


B

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)

3.

INSPECT MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)


*a

Component without harness connected

(Map Light Assembly (Sliding Roof Switch))

(a) Remove the map light assembly (sliding roof switch) (See page ).


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

5 (UP) - 1 (GND)

Tilt up switch pressed

Below 1 Ω

5 (UP) - 1 (GND)

Tilt up switch not pressed

10 kΩ or higher

4 (DOWN) - 1 (GND)

Tilt down switch pressed

Below 1 Ω

4 (DOWN) - 1 (GND)

Tilt down switch not pressed

10 kΩ or higher

3 (OPN) - 1 (GND)

Slide open switch pressed

Below 1 Ω

3 (OPN) - 1 (GND)

Slide open switch not pressed

10 kΩ or higher

2 (CLS) - 1 (GND)

Slide close switch pressed

Below 1 Ω

2 (CLS) - 1 (GND)

Slide close switch not pressed

10 kΩ or higher


NG

REPLACE MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)


OK

4.

CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) - MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH) AND BODY GROUND)

(a) Disconnect the S10 sliding roof drive gear sub-assembly (sliding roof ECU) connector.

(b) Disconnect the U2 map light assembly (sliding roof switch) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S10-4 (UP) - U2-5 (UP)

Always

Below 1 Ω

S10-6 (DWN) - U2-4 (DOWN)

Always

Below 1 Ω

S10-7 (OPN) - U2-3 (OPN)

Always

Below 1 Ω

S10-5 (CLS) - U2-2 (CLS)

Always

Below 1 Ω

U2-1 (GND) - Body ground

Always

Below 1 Ω

S10-12 (E) - Body ground

Always

Below 1 Ω

S10-4 (UP) or U2-5 (UP) - Body ground

Always

10 kΩ or higher

S10-6 (DWN) or U2-4 (DOWN) - Body ground

Always

10 kΩ or higher

S10-7 (OPN) or U2-3 (OPN) - Body ground

Always

10 kΩ or higher

S10-5 (CLS) or U2-2 (CLS) - Body ground

Always

10 kΩ or higher


OK

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Switch Failure (B2342)
DESCRIPTION This DTC is stored when the sliding roof drive gear sub-assembly (sliding roof ECU) detects that the sliding roof switch in the map light assembly is stuck for 30 seconds or more. ...

Sliding Roof Control Switch Circuit
DESCRIPTION The sliding roof drive gear sub-assembly (sliding roof ECU) receives sliding roof switch signals and drives its built-in motor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When ...

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