Toyota 4Runner manuals

Toyota 4Runner: 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.

DTC Code

DTC Detection Condition

Trouble Area

B2342

Sliding roof drive gear sub-assembly detects that the sliding roof switch in the map light assembly is stuck for 30 seconds or more.

  • 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.

CHECK FOR DTC

(a) Clear the DTCs (See page ).


(b) Check for DTCs (See page ).


Result

Result

Proceed to

DTC B2342 is output

A

DTC is not output

B


B

USE SIMULATION METHOD TO CHECK


A

2.

READ VALUE USING TECHSTREAM (SLIDING ROOF)

(a) Using the Techstream, read the Data List (See page ).


Sliding Roof

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Open Switch Failure (Past)

Slide open switch failure signal (Past) / ON or OFF

ON: Slide open switch signal failure (Past)

OFF: No slide open switch signal failure (Past)

-

Close Switch Failure (Past)

Slide close switch failure signal (Past) / ON or OFF

ON: Slide close switch signal failure (Past)

OFF: No slide close switch signal failure (Past)

-

Up Switch Failure (Past)

Tilt up switch failure signal (Past) / ON or OFF

ON: Tilt up switch signal failure (Past)

OFF: No tilt up switch signal failure (Past)

-

Down Switch Failure (Past)

Tilt down switch failure signal (Past) / ON or OFF

ON: Tilt down switch signal failure (Past)

OFF: No tilt down switch signal failure (Past)

-

Open Switch Failure (Current)

Slide open switch failure signal (Current) / ON or OFF

ON: Slide open switch signal failure (Current)

OFF: No slide open switch signal failure (Current)

-

Close Switch Failure (Current)

Slide close switch failure signal (Current) / ON or OFF

ON: Slide close switch signal failure (Current)

OFF: No slide close switch signal failure (Current)

-

Up Switch Failure (Current)

Tilt up switch failure signal (Current) / ON or OFF

ON: Tilt up switch signal failure (Current)

OFF: No tilt up switch signal failure (Current)

-

Down Switch Failure (Current)

Tilt down switch failure signal (Current) / ON or OFF

ON: Tilt down switch signal failure (Current)

OFF: No tilt down switch signal failure (Current)

-

OK:

"OFF" appears on the Techstream screen.


OK

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


NG

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

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" bel ...

Position Initialization Incomplete (B2343)
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