Sensor/SDM Replacement Guideline

Check vehicle body, forward (discriminating) sensor and 5DM, and if any one of following symptoms is applicable, replace.
a. Sensor or SDM is in the area of accident damage.
- The "area of accident damage" is defined as that area of the vehicle which is crushed, bent, or damaged in other ways. An example might be a significant front-end collision in which the forward portions of the vehicle have contacted another vehicle, tree, guardrail, etc. In this example, a sensor on the front of the vehicle, such as the hood lock member, would require replacement, since that portion of the vehicle was damaged in the accident.
- A SDM in the passenger compartment would not require mandatory replacement. Of course, if the 5DM sets a diagnostic trouble code and the diagnostic chart leads to a malfunctioning sensor or SDM that was not in the area of accident damage, that sensor or SDM should also be replaced. Sensor or SDM in the area of accident damage should be replaced even if it does not appear to be damaged. Do not attempt to determine whether a sensor or SDM is OK- ALWAYS replace it if it is in the area of accident damage.
- Also, if a sensor or SDM is in an area of accident damage, but the air bag system has NOT been deployed, replace the sensor or SDM. The sensor or SDM bracket may be slightly bent, wiring may be damaged, etc., and the sensor or SDM might not work properly in another collision. Again, do not attempt to determine whether a sensor or SDM is OK-ALWAYS replace it if it is in the area of accident damage.
b. An external damage such as deformation, scratch, crack, peeled paint, etc. is found through visual appearance check of sensor and SDM.
c. Sensor or SDM cannot be installed properly due to a cause in itself. (There is a gap between sensor or SDM and its mounting bracket, or it cannot be fixed securely.)
d. Connector or lead wire of sensor or SDM has a scorching, melting or damage, or connector cannot be connected securely or locked.
e. SDM sets a diagnostic trouble code and the diagnostic chart leads to a malfunctioning sensor or SDM.
f. Sensor or SDM has been dropped from a height of 91.4 cm (3 ft) or more.