[fmartino]

I know 1-3 and 1-5 are sensor problems. Will cleaning these possibly fix or do I need to have them replaced? Can they be cleaned/replaced with just the wheel removed, or do I need to pull the rotors off?

What is 5-3? I have the online pdf service manual but the page is missing for this fault and not sure what how I can diagnose this further.

I have a 99 Acura RL Black/Black with 147K, original owner, and this car has been awesome over the years! I like to DIY so any help would be great. Thanks!

 

[Hondacuraplanet]

The TCS control unit constantly monitors the IG1 voltage. When the unit detects IG1voltage of 12.5 V or less, it turns on the TCS indicator light and the DTC 5-2 is memorized. When the unit detects IG1 voltage of 19 V or more, it turns on the TCS indicator light and the DTC 5-3 is memorized.

Possible causes which raise the IG1 voltage to 19 V or more:

Faulty charging system
Excessive voltage from a battery charger
Connection to a 24 V battery by booster cables

If you start the engine and the TCS light doesn't come on, check the charging system.