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.
PINPOINT TEST N: DTCs U3003:17
- N1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self-Test - All CMDTCs .
Is DTC B1317, B1676, P0563 (PCM) or U3003:17 set in more than one module?
- Yes : REFER to CHARGING SYSTEM to diagnose an overcharging condition.
- No : GO to N2 .
- N2 CHECK THE BATTERY VOLTAGE
- Turn off all interior/exterior lights and accessories.
- Start and run the engine at approximately 2, 000 rpm for 3 minutes while monitoring the battery voltage.
Does the battery voltage rise to 15.5 volts or higher?
- Yes : REFER to CHARGING SYSTEM to diagnose an overcharging condition.
- No : GO to N3 .
- N3 RECHECK FOR DTC U3003:17
- Turn the engine off.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self-Test - ABS Module.
- Using a scan tool, clear the ABS module DTCs.
- Repeat the ABS module self-test.
Is DTC U3003:17 still present?
- Yes
: For vehicles without adaptive cruise control, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
For vehicles with adaptive cruise control, INSTALL a new HCU . REFER to HYDRAULIC CONTROL UNIT (HCU) .
- No : The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.
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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.