B2416

LIGHTING: LIGHTING SYSTEM: B2416: Height Control Sensor Malfunction

DTC B2416 - Height Control Sensor Malfunction

DESCRIPTION

w/ Air suspension system:
The AFS ECU receives signals regarding the height of the front / rear of the vehicle from the suspension control ECU.
w/o Air suspension system:
The AFS ECU receives the signals from the height control sensor rear RH.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE CONDITION
(a) Check the vehicle condition.
:






B -- CHECK DTC (AIR SUSPENSION SYSTEM)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH POWER SOURCE)





(a) Disconnect the H26 connector from the height control sensor rear RH.
(b) Measure the voltage according to the value(s) in the table below.
Voltage:






NG -- INSPECT AFS ECU
OK -- Continue to next step.
3. INSPECT HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH
(a) Connect 3 dry cell batteries (1.5 V) in a series.
(b) Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead from the battery to terminal 3.
(c) Measure the voltage between terminal 2 and terminal 3 when slowly moving the link up and down.
Voltage:










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





(a) Disconnect the A14 connector from the AFS ECU.
(b) Disconnect the H26 connector from the height control sensor sub-assembly rear RH.
(c) Measure the resistance according to the value(s) in the following table.
Resistance:






Result:






C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPLACE AFS ECU
5. INSPECT AFS ECU





(a) Measure the voltage according to the value(s) in the table below.
Voltage:






Result:






C -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
B -- REPLACE AFS ECU
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - HEIGHT CONTROL SENSOR REAR RH)
6. CHECK DTC (AIR SUSPENSION SYSTEM)
(a) Check the DTC of the air suspension system .
OK:
Normal system code is output.
NG -- GO TO FLOW CHART
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU HEIGHT SIGNAL POWER SOURCE)





(a) Measure the voltage according to the value(s) in the table below.
Voltage:






NG -- INSPECT AFS ECU
OK -- Continue to next step.
8. INSPECT SUSPENSION CONTROL ECU





(a) Measure the voltage according to the value(s) in the table below.
Voltage:






NG -- REPLACE SUSPENSION CONTROL ECU
OK -- Continue to next step.
9. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - AFS ECU)





(a) Disconnect the suspension control ECU connector and AFS ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:






Result:






C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPLACE AFS ECU
10. INSPECT AFS ECU





(a) Measure the voltage according to the value(s) in the table below.
Voltage:






Result:






C -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
B -- REPLACE AFS ECU
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - SUSPENSION CONTROL ECU)