Dtc C1782/82 Low Battery Positive Voltage


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (IG/+B POWER SOURCE VOLTAGE)

CHECK TERMINAL VOLTAGE (IG, B)

CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - BODY GROUND)

CHECK FOR DTC

DTC C1782/82 Low Battery Positive Voltage


DESCRIPTION


DTC Code
DTC Detection Condition
Trouble Area
C1782/82
The voltage at terminal IG or B is 10 V or less or 16 V or higher for 0.5 seconds.
  1. Battery
  2. Charging system
  3. AIR SUS fuse
  4. AIR SUS NO. 2 fuse
  5. AVS fuse
  6. Harness or connector
  7. Suspension control ECU

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Suspension Control.Air Suspension System. Dtc C1782/82 Low Battery Positive Voltage


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the suspension control ECU, perform registration (LandCruiser RM000003X4500TX.html).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.READ VALUE USING INTELLIGENT TESTER (IG/+B POWER SOURCE VOLTAGE)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Chassis / Air suspension / Data List.

    Air Suspension
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    IG Power Source Voltage
    		Actual ECU power supply voltage / Min.: 0.0 V, Max.: 25.5 V
    		 Ignition switch ON: 11 to 14 V
    		-
    +B Power Source Voltage
    		Actual battery supply voltage / Min.: 0.0 V, Max.: 25.5 V
    		 Ignition switch ON: 11 to 14 V
    		-
    Standard voltage:
    11 to 14 V
    Result
    Result
    		Proceed to
    NG
    		A
    OK (When troubleshooting according to problem symptoms table)
    		B
    OK (When troubleshooting according to DTC chart)
    		C


B
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000001SGQ021X.html)

C
USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)
A


2.CHECK TERMINAL VOLTAGE (IG, B)

  1. Disconnect the A49 suspension control ECU connector.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Suspension Control.Air Suspension System. Dtc C1782/82 Low Battery Positive Voltage

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A49-3 (B) - Body ground
    		Always
    		11 to 14 V
    A49-1 (IG) - Body ground
    		 Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Suspension Control ECU)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - BODY GROUND)

  1. Disconnect the A49 and R19 suspension control ECU connectors.

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

    Standard Resistance:
    Tester Connection
    		 Condition
    		Specified Condition
    R19-10 (GND) - Body ground
    		Always
    		Below 1Ω
    A49-5 (GND) - Body ground
    		Always
    		Below 1Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK FOR DTC

  1. Clear the DTCs (LandCruiser RM000001G7P02NX.html).

  1. Check for DTCs (LandCruiser RM000001G7P02NX.html).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B


B
REPLACE SUSPENSION CONTROL ECU (LandCruiser RM000002BGR01UX.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)