Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

(a) Disconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

S50-8 (B) - S50-12 (E)

W - W-B

Battery power supply

Always

11 to 14 V

S50-1 (IG) - S50-12 (E)

BE - W-B

IG power supply

Ignition switch off

Below 1 V

S50-1 (IG) - S50-12 (E)

BE - W-B

IG power supply

Ignition switch ON

11 to 14 V

S50-12 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

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

(c) Reconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

S50-7 (OPN) - S50-12 (E)

B - W-B

Sliding roof motor open

Ignition switch ON, OPEN switch on

Below 1 V

S50-7 (OPN) - S50-12 (E)

B - W-B

Sliding roof motor open

Ignition switch ON, OPEN switch off

11 to 14 V

S50-5 (CLS) - S50-12 (E)

SB - W-B

Sliding roof motor close

Ignition switch ON, CLOSE switch on

Below 1 V

S50-5 (CLS) - S50-12 (E)

SB - W-B

Sliding roof motor close

Ignition switch ON, CLOSE switch off

11 to 14 V

S50-4 (UP) - S50-12 (E)

LG - W-B

Sliding roof motor up

Ignition switch ON, UP switch on

Below 1 V

S50-4 (UP) - S50-12 (E)

LG - W-B

Sliding roof motor up

Ignition switch ON, UP switch off

11 to 14 V

S50-6 (DWN) - S50-12 (E)

L - W-B

Sliding roof motor down

Ignition switch ON, DOWN switch on

Below 1 V

S50-6 (DWN) - S50-12 (E)

L - W-B

Sliding roof motor down

Ignition switch ON, DOWN switch off

11 to 14 V

If the result is not as specified, the sliding roof ECU (sliding roof drive gear sub-assembly) may be malfunctioning.

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