Toyota CH-R Service Manual: Height Control Sensor Malfunction (B2416,B241A)

Toyota CH-R Service Manual / Lighting (ext) / Automatic Headlight Beam Level Control System / Height Control Sensor Malfunction (B2416,B241A)

DESCRIPTION

This DTC is stored when the headlight ECU sub-assembly LH detects a malfunction in the rear height control sensor sub-assembly LH power source circuit or rear height control sensor sub-assembly LH circuit. The headlight ECU sub-assembly LH stores DTC B2416 and B241A.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B2416

Height Control Sensor Malfunction

Any of the following conditions is met:

  • Malfunction in rear height control sensor sub-assembly LH
  • Open in rear height control sensor sub-assembly LH power source circuit
  • Short in rear height control sensor sub-assembly LH power source circuit
  • Rear height control sensor sub-assembly LH
  • Headlight ECU sub-assembly LH
  • Harness or connector

-

B241A

Rear Height Control Sensor

Any of the following conditions is met:

  • Malfunction in rear height control sensor sub-assembly LH
  • Open in rear height control sensor sub-assembly LH circuit
  • Short in rear height control sensor sub-assembly LH circuit
  • Rear height control sensor sub-assembly LH
  • Headlight ECU sub-assembly LH
  • Harness or connector

-
DTC Detection Conditions (DTC B2416 and B241A):
 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Diagnosis Condition

Ignition switch ON

○

○

○

Malfunction Status

Malfunction in rear height control sensor sub-assembly LH

○

-

-

Open in rear height control sensor sub-assembly LH power source circuit

-

○

-

Short in rear height control sensor sub-assembly LH power source circuit

-

-

○

Detection Time

-

-

-

Number of Trips

1 trip

1 trip

1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before performing this inspection, check that the rear height control sensor sub-assembly LH is installed correctly.
  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Click here

  • If any of the following are performed, it is necessary to initialize the headlight ECU sub-assembly LH.

    Click here

    • Replacement of the rear height control sensor sub-assembly LH
    • Removal/installation of the rear height control sensor sub-assembly LH
    • Work that changes the vehicle height such as replacement of suspension components

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Click here

Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTC B2416 or B241A are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

3.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / HL AutoLeveling / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > HL AutoLeveling > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Height Sens Pw Supply Val

Rear height control sensor sub-assembly LH power supply value

0 to 5.00 V

4.61 to 5.00 V

-

Rr Height Sens Signal Val

Rear height control sensor sub-assembly LH signal value

0 to 5.00 V

0.50 to 4.50 V

Value changes according to vehicle height
Body Electrical > HL AutoLeveling > Data List

Tester Display

Height Sens Pw Supply Val

Rr Height Sens Signal Val

OK:

Normal condition listed above is displayed.

OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

NG

4.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH)

(a) Disconnect the A16 headlight ECU sub-assembly LH connector.

(b) Disconnect the O2 rear height control sensor sub-assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A16-16 (SBR) - O2-3 (SHB)

Always

Below 1 Ω

A16-17 (SHRL) - O2-2 (SHRR)

Always

Below 1 Ω

A16-15 (SGR) - O2-1 (SHG)

Always

Below 1 Ω

A16-16 (SBR) or O2-3 (SHB) - Body ground

Always

10 kΩ or higher

A16-17 (SHRL) or O2-2 (SHRR) - Body ground

Always

10 kΩ or higher

A16-15 (SGR) or O2-1 (SHG) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH

(a) Remove the rear height control sensor sub-assembly LH.

Click here

(b) Inspect the rear height control sensor sub-assembly LH.

Click here

OK:

Rear height control sensor sub-assembly LH is normal.

OK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

NG

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH

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