Network
generic / SAE
U024A
Lost Communication With Interior Lighting Control Module A
ECU lost communication with the interior lighting control module A (ambient lighting, courtesy lights).
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 4A
Possible causes
- Module unpowered high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.3–2 h
- Component: interior lighting module a
- Component: can bus
- MIL / check engine light
Sources
References
sae:J2012