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3. (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (Z43) O2 1/1 Negative Is the resistance above 1000.0 ohms? Yes >> Go to 4 No >> Repair the (Z43) O2 1/1 Negative Current Control circuit for a short to ground. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 4. (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT SHORTED TO THE (K343) FUSED ASD RELAY Measure the resistance between the (Z43) O2 1/1 Negative Current Is the resistance above 1000.0 ohms? Yes >> Go to 5 No >> Repair the (Z43) O2 1/1 Negative Current Control circuit for a short to the (K343) Fused ASD Relay Output 2 circuit. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 5. (Z43) O2 1/1 NEGATIVE CURRENT CONTROL CIRCUIT SHORTED TO THE (K99) O2 1/1 HEATER Measure the resistance between the (Z43) O2 1/1 Negative Current Is the resistance above 1000.0 ohms? Yes >> Go to 6 No >> Repair the (Z43) O2 1/1 Negative Current Control circuit for a short to the (K99) O2 1/1 Heater Control circuit. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 9 - 1744 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |