Voltmeter Inaccurate

Start engine. Check voltage across battery terminals. If battery voltage matches vehicle voltmeter, voltmeter is accurate. If battery voltage does not match vehicle voltmeter, check for open or high resistance in Pink wire between IPC connector B17 and I/P fuse block. Check for open or high resistance in Black wire between instrument cluster terminal B13 and ground. Repair as necessary. If wires are okay, replace voltmeter.