Disconnect the connector from each of these sensors, one at a time, and measure voltage between body ground and ECM/PCM connector terminal A20 with the ignition switch ON (II). Accelerator pedal position (APP) sensor EGR valve (K20Z2 engine) Output shaft (countershaft) speed sensor Is there about 5 V?
YES | - | Replace the sensor that restored 5 V when disconnected.■
NO | - | Go to Step 74 .
Turn the ignition switch OFF. Jump the SCS line with the HDS. Disconnect the connector from these sensors: Accelerator pedal position (APP) sensor EGR valve (K20Z2 engine) Output shaft (countershaft) speed sensor Disconnect ECM/PCM connector A (31P). |