Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA2009TRIBUTE 4WD L4-2.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSSMART JUNCTION BOX (SJB)PINPOINT TEST 4: DTC U0155 - LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IC) CONTROL MODULE
2009 Mazda Tribute 4WD L4-2.5L
Pinpoint Test 4: DTC U0155 - Lost Communication With Instrument Panel Cluster (IC) Control Module
2009 Mazda Tribute 4WD L4-2.5LSECTION Pinpoint Test 4: DTC U0155 - Lost Communication With Instrument Panel Cluster (IC) Control Module
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PINPOINT TEST 4: DTC U0155 - LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IC) CONTROL MODULE
Normal Operation
DTC U0155 (Lost Communication with Instrument Panel Cluster (IC) Control Module) - set by the Smart Junction Box (SJB) if data messages received from the Instrument Cluster (IC) over the Medium-Speed Controller Area Network (MS-CAN) are missing for 5 minutes.
Possible Causes
- Module communication
- IC
Diagnostic Procedure
Step 1-Step 4:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.