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P2127-PPS 2 VOLTAGE TOO LOW (CONTINUED) 6. (F856) APPS NO. 2 5-VOLT SUPPLY CIRCUIT SHORTED TO OTHER CIRCUITS Measure the resistance between the (F856) APPS No. 2 5-volt supply Is the resistance greater than 100 k ohms? Yes >> Go To 7 No >> Repair the (F856) APPS No. 2 5-volt supply circuit shorted to other circuits. Perform POWERTRAIN VERIFICATION TEST VER - 1 7. ECM Reconnect the ECM harness connectors. Turn the ignition on. While monitoring with the scan tool, connect a jumper wire between the (K29) APPS No. 2 signal circuit at the NOTE: With the sensor disconnected it is normal to have a APPS 1 and APPS 2 low voltage DTC set. Did DTC P2128 set? Yes >> Go To 8 No >> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC- 9 - 1418 ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL DR/DH |