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P0151-O2 SENSOR 2/1 CIRCUIT LOW (CONTINUED) 5. (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the C1 and C2 PCM harness connectors. Measure the resistance between ground and the (K43) O2 2/1 Signal Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (K43) O2 2/1 Signal cir- cuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 6. (K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO THE (K902) O2 RETURN UPSTREAM CIRCUIT Measure the resistance between the (K43) O2 2/1 Signal circuit and Is the resistance below 100 ohms? Yes >> Repair the short between the (K902) O2 Return Upstream circuit and the (K43) O2 2/1 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 7 9 - 192 ENGINE ELECTRICAL DIAGNOSTICS WK |