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.

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any p ...

Other materials:

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS CHECK HINT: In troubleshooti ...

System Description
SYSTEM DESCRIPTION 1. ENGINE IMMOBILISER SYSTEM DESCRIPTION The engine immobiliser system is designed to prevent the vehicle from being stolen. This system uses the transponder key ECU assembly that stores the key ID codes of authorized ignition keys. If an attempt is made to start the engine ...

Clutch Switch Circuit
DESCRIPTION Clutch switch circuit inspection is necessary for manual transmission vehicles. When the clutch pedal is released, the ECM receives the positive (+) battery voltage through the ECU-IG NO. 2 fuse and ignition switch. While the clutch pedal is depressed, the clutch switch assembly se ...

© 2011-2022 Copyright www.ttguide.net