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100-09-9 100-09-9 Powertrain Diagnostic Routines Identification DIAGNOSIS AND TESTING (Continued) ROUTINE 2: VEHICLE DOES NOT START/VEHICLE QUITS WHILE DRIVING (NIMH VEHICLES) TEST STEP ACTION TO TAKE • Connect jumper wires between the connector for the temperature sensor in question and the known good temperature sensor that was disconnected. • With key ON, monitor BCM PIDs TMPSEN1, TMPSEN2, and TMPSEN3. • Does the TMPSEN PID that indicated less than -30 ° C (-22 ° F) still indicate the same value? 2-8 CHECK TRACTION BATTERY TEMPERATURE SENSORS FOR OVERTEMPERATURE CONDITION • With key ON, monitor BCM PIDs TMPSEN1, TMPSEN2, and Yes = PARK the vehicle indoors in TMPSEN3. a cooler environment. CONNECT the vehicle to a power control station (PCS) to allow the traction battery fans to operate. GO to 2-9. • Do any of the TMPSEN PIDs indicate greater than 70 ° C (158 ° F)? No = DISCONNECT and RECONNECT the 12-volt auxiliary battery negative cable and RECHECK the BCM OP PID. If the BCM OP PID still indicates 54, REPLACE the BCM. REFER to Section 2-9 CHECK IF OVERTEMPERATURE STATE IS CAUSED BY AN ACTUAL OVERTEMPERATURE CONDITION NOTE: Allow adequate time for vehicle to cool before checking for Yes = ALLOW temperature(s) to temperature decrease. decrease below 55 ° C • While vehicle is connected to the PCS, monitor BCM PIDs TMPSEN1, (131 ° F). System OK. TMPSEN2, and TMPSEN3. • Do the TMPSEN PIDs that were greater than 70 ° C (158 ° F) No = GO to 2-10. decrease? 2-10 CHECK BATTERY TEMPERATURE SENSORS • Remove the traction battery and connect Traction Battery High-Voltage Yes = REPLACE the BCM. Lockout and Diagnostic Tool to the traction battery high-voltage two-pin REFER to Section C3994M. No = REPLACE the battery WARNING: The traction battery contains high-voltage temperature sensor in components and wiring. High-voltage insulated safety gloves and face question. shield must be worn when carrying out the following steps. Failure to follow this warning may result in severe personal injury or death. • Connect Traction Battery High Voltage Service Cord to traction battery support tray in-line C1935F and in-line C1935M. • Connect Traction Battery Low Voltage Service Cord to traction battery support tray in-line C1939F and in-line C1939M. • With key OFF, disconnect the battery temperature sensor in question and one of the other temperature sensors. • Connect jumper wires between the connector for the temperature sensor in question and the known good temperature sensor that was disconnected. • With key ON, monitor BCM PIDs TMPSEN1, TMPSEN2, and TMPSEN3. • Does the TMPSEN PID that indicated greater than 70 ° C (158 ° F) still indicate the same value? (Continued) |