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100-09-13 100-09-13 Powertrain Diagnostic Routines Identification DIAGNOSIS AND TESTING (Continued) ROUTINE 4: VEHICLE OPERATES AT REDUCED POWER (LEAD ACID VEHICLES) TEST STEP ACTION TO TAKE If BCM OP PID indicates 69, CHARGE the traction battery. REFER to Section • Does the BCM OP PID indicate 67 (limited operating strategy drive-battery overtemperature), 68 (LOS drive-battery No = undertemperature), or 69 (LOS drive-low state of charge )? 4-2 CHECK TRACTION BATTERY TEMPERATURE SENSORS FOR OVERTEMPERATURE CONDITION • With key ON, monitor BCM PIDs TMPSEN1, TMPSEN2, TMPSEN3, Yes = GO to 4-3. and TMPSEN4. If all TMPSEN PIDs are greater than 65 ° C (149 ° F), PARK the vehicle in a cool environment to cool down below 65 ° C (149 ° F). • Do any of the TMPSEN PIDs indicate greater than 65 ° C (149 ° 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 67, REPLACE the BCM. REFER to Section 414-03A . 4-3 CHECK TEMPERATURE DIFFERENCE BETWEEN BATTERY TEMPERATURE SENSORS • With key ON, monitor BCM PIDs TMPSEN1, TMPSEN2, TMPSEN3, Yes = GO to 4-4. and TMPSEN4. • Is there a temperature difference of greater than 25 ° C (45 ° F) No = PARK the vehicle in a cool between the temperature sensor that is above 65 ° C (149 ° F) and the environment to cool the other temperature sensors? vehicle below 65 ° C (149 ° F) for the temperature sensor in question. 4-4 CHECK BATTERY TEMPERATURE SENSOR • 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. 414-03A . • Connect Traction Battery High Voltage Service Cord to traction battery No = support tray in-line C1935F and in-line C1935M. temperature sensor in question. (Continued) |