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NOTE: Remove the jumper wire before continuing. 10. O2 SENSOR SIGNAL CIRCUIT WARNING: When the engine is operating, do not stand in direct Measure the voltage on the (K43) O2 Sensor 2/1 Signal circuit in the Is the voltage above 4.8 volts? Yes >> Check the (K43) O2 Sensor 2/1 Signal circuit for damage, short to ground, open, or short to voltage. Inspect the O2 Perform the POWERTRAIN VERIFICATION TEST. (Refer to No >> Go To 11 11. (K902) O2 SENSOR UPSTREAM RETURN CIRCUIT Engine still running. Measure the voltage on the (K902) O2 Upstream Return circuit in the Is the voltage at 2.5 volts? Yes >> Go To 12 No >> Check the (K902) O2 Upstream Return circuit for damage, short to ground, open, or short to voltage. Inspect the O2 Perform (NGC) POWERTRAIN VERIFICATION TEST VER - NOTE: Turn the ignition off before continuing. 12. PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 206 ENGINE ELECTRICAL DIAGNOSTICS KJ |