B2416

LIGHTING: LIGHTING SYSTEM: B2416: Height Control Sensor Malfunction

DTC B2416 - Height Control Sensor Malfunction

DESCRIPTION

The AFS ECU receives signals regarding the height of the front/rear of the vehicle from the height control sensor.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS / Data List.
(e) Read the display on the Techstream.

AFS (AFS ECU)





OK:
Condition sign can be displayed.
Result:






C -- CHECK HARNESS AND CONNECTOR (FRONT HEIGHT CONTROL SENSOR CIRCUIT)
B -- REPLACE AFS ECU
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (FRONT HEIGHT CONTROL SENSOR CIRCUIT)




(a) Disconnect the A17 front height control sensor connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR CIRCUIT)




(a) Disconnect the Y2 rear height control sensor connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)




(a) Disconnect the A28 AFS ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)




(a) Disconnect the Y2 sensor connector.
(b) Disconnect the A27 AFS ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. INSPECT HEIGHT CONTROL SENSOR (FRONT HEIGHT CONTROL SENSOR)
(a) Connect 3 dry cell batteries (1.5 V) in series.




(b) Remove the height control sensor assembly front.
(c) Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead from the battery to terminal 1.
(d) Measure the voltage between terminals 2 and 1 while slowly moving the link up and down.
Standard voltage:






NG -- REPLACE HEIGHT CONTROL SENSOR (FRONT HEIGHT CONTROL SENSOR)
OK -- Continue to next step.
7. INSPECT HEIGHT CONTROL SENSOR (REAR HEIGHT CONTROL SENSOR)




(a) Connect 3 dry cell batteries (1.5 V) in series.
(b) Remove the height control sensor assembly rear.
(c) Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead from the battery to terminal 1.
(d) Measure the voltage between terminals 2 and 1 while slowly moving the link up and down.
Standard voltage:






NG -- REPLACE HEIGHT CONTROL SENSOR (REAR HEIGHT CONTROL SENSOR)
OK -- REPLACE AFS ECU
8. CHECK HARNESS AND CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)




(a) Disconnect the A17 front height control sensor connector.
(b) Disconnect the A28 AFS ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - FRONT HEIGHT CONTROL SENSOR)
OK -- REPLACE AFS ECU
9. CHECK HARNESS AND CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)




(a) Disconnect the Y2 sensor connector.
(b) Disconnect the A27 AFS ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - REAR HEIGHT CONTROL SENSOR)
OK -- REPLACE AFS ECU