DTC U3000:4A [Blind Spot Monitoring (BSM)]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
U3000:4A REFERENCE
| DESCRIPTION |
BSM control module assembly abnormality |
| DETECTION CONDITION |
- A logic is provided to monitor for incorrect installation in order to prevent the left and right BSM control modules from being installed in reverse of each other. Terminal E of the BSM control module (LH) monitors the body ground condition, and terminal E of the BSM control module (RH) monitors the BSM OFF switch condition. The circuit is open during non-operation of the BSM OFF switch. It can be determined that the left and right BSM control modules have been installed in reverse if the following conditions occur:
- A short to ground condition of BSM control module (RH) terminal E continues for 180 s or more
- An open circuit condition of BSM control module (LH) terminal E continues for 0.9 s or more
|
| POSSIBLE CAUSE |
- BSM control module (LH) and BSM control module (RH) have been installed such that their left and right positions are reversed
- Connector or terminal malfunction
- BSM OFF switch malfunction
- Short to ground in wiring harness between BSM control module (RH) terminal E and BSM OFF switch terminal C
- Open circuit in wiring harness between BSM control module (LH) terminal E and body ground
- BSM control module (LH) malfunction
- BSM control module (RH) malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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