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100-09-29 100-09-29 Powertrain Diagnostic Routines Identification DIAGNOSIS AND TESTING (Continued) ROUTINE 8: VEHICLE DOES NOT CHARGE (LEAD ACID VEHICLES) TEST STEP ACTION TO TAKE • With key OFF, disconnect traction battery support tray in-line C1939 and Yes = GO to 8-31. connect 104-Pin Breakout Box (BOB) to in-line C1939M using Traction Battery Low Voltage Service Cord; do not connect Traction Battery Low Voltage Service Cord to in-line C1939F. • With key OFF, measure the resistance of the Y wire between BOB pin No = REPAIR the Y wire. 54 and in-line 1969M. • Is the resistance less than 5 ohms? 8-31 CHECK CIRCUIT 3404 (Y) (INSIDE OF TRACTION BATTERY SUPPORT TRAY) FOR OPEN • Disconnect BOB from in-line C1939M, remove the traction battery, and Yes = REPLACE the BCM. connect Traction Battery High-Voltage Lockout and Diagnostic Tool to the traction battery high-voltage two-pin C3994M. No = REPAIR the Y wire. WARNING: The traction battery contains high-voltage components and wiring. High-voltage insulated safety gloves and face shield must be worn when carrying out the following steps. Failure to follow this warning may result in severe personal injury or death. • Connect BOB to traction battery support tray in-line C1939F using Traction Battery Low Voltage Service Cord; do not connect Traction Battery Low Voltage Service Cord to in-line C1939M. • With key OFF, disconnect BCM C1987. • Measure the resistance of the Y wire between pin 12 on BCM C1987 and BOB pin 54. • Is the resistance less than 5 ohms? ROUTINE 9: VEHICLE DOES NOT CHARGE (NIMH VEHICLES) TEST STEP ACTION TO TAKE 9-1 CHECK STATUS OF BATTERY CONTROL MODULE (BCM) OPERATING STATE • Verify the ignition key is in the OFF position and the gear selector is in the P (Park) position. • Connect the vehicle to a power control station (PCS) and press the START button to begin charging. NOTE: Wait approximately five minutes to allow the BCM OP PID to be set. • With key OFF and vehicle on-charge, monitor BCM PID BCM OP. Check for the following numbers: — 48 (shutdown-low battery module voltage) Yes = If 48, GO to 9-2. — 83 (no charge-battery overtemperature) — 84 (no charge-battery undertemperature) — 85 (no charge-high temperature delta) — 87 (no charge-battery full) If 87, the traction battery is at full state of charge (SOC). System OK. — 96 (no charge-EPO detected) — 99 (no charge-line capacity out of range) — 101 (no charge-no AC to charger) • Does the BCM OP PID indicate 48, 83, 84, 85, 87, 96, 99, or 101? No = 9-2 CHARGE TRACTION BATTERY TO FULL STATE OF CHARGE (SOC) • Disconnect and reconnect the 12-volt auxiliary battery negative cable. Yes = (Continued) |