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

Toyota 4Runner Service Manual / Suspension / Suspension Control / Kinetic Dynamic Suspension System / 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.

(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	-

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

GO TO STEP 3

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

REPLACE STABILIZER CONTROL ECU

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)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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)

REPLACE STABILIZER CONTROL ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

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