Toyota 4Runner manuals

Toyota 4Runner: Power Supply Voltage Malfunction (C1882/82)

DESCRIPTION

The stabilizer control ECU recognizes the ignition switch ON signal based on the voltage input to the IG terminal.

DTC Code

DTC Detection Condition

Trouble Area

C1882/82

The IG terminal voltage is 10 V or less or 16 V or higher for 0.5 seconds.

  • Battery
  • Charging system
  • KDSS fuse
  • Harness or connector
  • Stabilizer control ECU

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (IG POWER SOURCE VOLTAGE)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / KDSS / Data List.

(f) Select the item below in the Data List, and read the value displayed on the Techstream.

KDSS

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

IG Power Source Voltage

IG Power Source Voltage/

Min.: 0.0 V

Max.: 25.5 V

Ignition switch ON: 11 to 14 V

-

Standard voltage:

11 to 14 V


NG

GO TO STEP 3


OK

2.

RECONFIRM DTC

(a) Clear the DTCs (See page ).


(b) Check for DTCs (See page ).


Result

Result

Proceed to

DTC is output

A

DTC is not output

B


A

REPLACE STABILIZER CONTROL ECU


B

USE SIMULATION METHOD TO CHECK

3.

CHECK HARNESS AND CONNECTOR (IG TERMINAL)

(a) Disconnect the stabilizer control ECU connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F70-24 (IG) - Body ground

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Stabilizer Control ECU)



NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

CHECK HARNESS AND CONNECTOR (GND TERMINAL)

(a) Disconnect the stabilizer control ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F70-22 (GND) - Body ground

Always

Below 1 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Stabilizer Control ECU)



OK

REPLACE STABILIZER CONTROL ECU


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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