Toyota 4Runner: Position Initialization Incomplete (B2343)

Toyota 4Runner Service Manual / Vehicle Exterior / Sliding Roof / Convertible / Sliding Roof System / 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.

GO TO STEP 3

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

END

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

REPLACE MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)

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.

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

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

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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