RENR5042-02 93 Troubleshooting Section Results: Boost pressure sensor J200/P200 OK – Each voltage measurement is 5.0 ± 0.2 VDC. Atmospheric pressure sensor J203/P203 Repair: Connect all of the sensor connectors. Clear all diagnostic codes. Check for active diagnostic codes. If the problem is intermittent, refer to Troubleshooting, “Electrical Connectors - Inspect”. Fuel pressure sensor J209/P209 Engine oil pressure sensor J201/P201 Auxiliary pressure sensor J220/P220 (if equipped) STOP. B. Wait for 15 seconds after you disconnect each sensor. Look for the active 262-04 code to deactivate. Not OK – At least one voltage measurement is not 5.0 ± 0.2 VDC.
There is a problem with the wiring or with the ECM. Proceed to Test Step 6. Expected Result: Test Step 4. Check the Voltage on the +5 V Supply Wire for the Suspect Sensor The 262-04 diagnostic code deactivates when a particular sensor is disconnected. A. Turn the keyswitch to the OFF position. Results: B. Disconnect the harness connectors for the suspect sensor. OK The 262-04 diagnostic code deactivates when a particular sensor is disconnected. C. Turn the keyswitch to the ON position. Note: Be sure to wiggle the harness during the following measurement in order to reveal an intermittent condition. Repair: Connect the suspect sensor. If the code returns, replace the sensor.
Connect all of the connectors. Verify that the problem is resolved. D. Measure the voltage between terminals A and B on the harness connector for the suspect sensor. STOP. Expected Result: Not OK The 262-04 diagnostic code remains after all of the sensors are disconnected. Leave the sensors disconnected. Proceed to Test Step 6. The voltage measurement is 5.0 ± 0.2 VDC. Results: Test Step 6. Check the +5 V Supply Wire for a Short to Engine Ground or a Short Circuit Yes The voltage measurement is 5.0 ± 0.2 VDC. The 5 volt supply is present at the harness connector for the suspect sensor. However, there is an active 10 diagnostic code. A. Turn the keyswitch to the OFF position. Repair:
Replace the suspect sensor. B. Disconnect the J2/P2 ECM connector. Disconnect the J1/P1 ECM connector. Verify that the problem is resolved. C. Verify that all of the pressure sensors are disconnected. STOP. No The voltage measurement is not 5.0 ± 0.2 VDC. The 5 volt supply is not present at the harness connector. There is a problem with the wiring or with the ECM. Proceed to Test Step 6. Note: Wiggle the harness during the following measurements in order to reveal an intermittent condition. D. Measure the resistance between terminal P2-72 (+5 V Supply) and all of the other terminals on the P2 connector. Test Step 5.
Disconnect the +5 V Pressure Sensors and Check for Active Diagnostic Codes E. Measure the resistance between terminal P2-72 and the engine ground. A. Disconnect the following sensors one at a time: F. Measure the resistance between terminal P2-80 (+5 V Supply) and all of the other terminals on the P2 connector. Injection actuation pressure sensor J500/P500