DTC U0028:87 [Advanced Keyless Entry And Push Button Start System]: Notes
WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0028:87 (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE
| DESCRIPTION |
Communication error with BCM |
| DETECTION CONDITION |
- Keyless control module receives the erratic signal from BCM.
- Keyless control module cannot receive the signal from BCM.
|
| POSSIBLE CAUSE |
- BCM DTC is stored
- BCM connector or terminals malfunction
- Keyless control module connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- BCM terminal 4K-Keyless control module terminal 3X
- Short to power supply in wiring harness between the following terminals:
- BCM terminal 4K-Keyless control module terminal 3X
- Open circuit in wiring harness between the following terminals:
- BCM terminal 4K-Keyless control module terminal 3X
- BCM malfunction
- Keyless control module malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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