Toyota 4Runner manuals

Toyota 4Runner: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY


(a) Disconnect the F42 air conditioning amplifier connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F42-21 (B) - F42-14 (GND)

V - W-B

Battery power source

Always

11 to 14 V

F42-1 (IG+) - F42-14 (GND)

L - W-B

Ignition switch power supply

Ignition switch ON

11 to 14 V

F42-1 (IG+) - F42-14 (GND)

L - W-B

Ignition switch power supply

Ignition switch off

Below 1 V

F42-14 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

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

(c) Reconnect the F42 air conditioning amplifier connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F42-38 (RDEF) - F42-14 (GND)

P - W-B

Rear defogger signal

Ignition switch ON, rear window defogger switch off

11 to 14 V

F42-38 (RDEF) - F42-14 (GND)

P - W-B

Rear defogger signal

Ignition switch ON, rear window defogger switch on

Below 1 V

  • If the result is not as specified, there may be a malfunction in the air conditioning amplifier.

2. CHECK HEATER CONTROL ASSEMBLY


(a) Disconnect the F29 heater control connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F29-4 (IG+) - F29-11 (GND)

L - W-B

Ignition switch power supply

Ignition switch ON

11 to 14 V

F29-4 (IG+) - F29-11 (GND)

L - W-B

Ignition switch power supply

Ignition switch off

Below 1 V

F29-11 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

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

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. ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrus ...

Other materials about Toyota 4Runner:

Side Step
Components COMPONENTS ILLUSTRATION ILLUSTRATION Disassembly DISASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE SIDE ST ...

Main Body ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Main Body ECU Communication Stop Mode Either condition is met: "Main Body" is not displayed on the "CAN Bus Check" s ...

© 2016-2020 | www.to4runner.net

0.0061