DTC P1594-A: CHARGING SYSTEM VOLTAGE TOO HIGH Chrysler LHS II

Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

1. Ensure battery is fully charged and in good condition. Using scan tool, actuate generator field driver. Using a test light, backprobe generator field driver circuit on back of generator. See «GENERATOR CONNECTOR IDENTIFICATION»(ref-576-S25033063852000030800000) table. If test light does not switch from dim to bright, go to next step. If test light switches from dim to bright, go to «DTC P1594-B: CHARGING SYSTEM VOLTAGE TOO HIGH»(ref-576-S09125176882000030800000) .
2. Using scan tool, stop generator field actuation. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Disconnect 2-pin generator field connector from back of generator. Using an ohmmeter, check resistance of generator field driver circuit between PCM connector and ground. See «PCM CONNECTOR WIRE IDENTIFICATION»(ref-576-S27199397582000030800000) table. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on generator field driver circuit. Perform «TEST VER-3A: CHARGING VERIFICATION»(ref-576-S08649961902000030800000) .
3. Using a DVOM, check resistance from one of the generator field terminals (on back of generator) to ground. If resistance is less than 5 ohms, repair or replace shorted generator as necessary. Perform «TEST VER-3A: CHARGING VERIFICATION»(ref-576-S08649961902000030800000) . If resistance is 5 ohms or more, replace PCM. Perform «TEST VER-3A: CHARGING VERIFICATION»(ref-576-S08649961902000030800000) .

GENERATOR CONNECTOR IDENTIFICATION

PCM CONNECTOR WIRE IDENTIFICATION