Diagnostic procedure

DTC P2228 - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Service Bulletins and/or online repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY CURRENT INPUT SIGNAL STATUS-IS CONCERN INTERMITTENT OR CONSTANT Connect the SST (104 Pin Breakout Box) to the PCM connector. (See PCM INSPECTION USING THE SST (104 PIN BREAKOUT BOX) ) Start engine. Measure voltage at breakout box terminal 37. Is voltage below 0.2 V?	Yes	Go to the next step.
3		No	Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4	VERIFY BARO V PID WHEN EGR BOOST SENSOR CONNECTOR IS DISCONNECTED Disconnect EGR boost sensor connector. Is voltage above 4.8 V?	Yes	Go to the next step.
4		No	Go to step 6.
5	CHECK POWER SUPPLY CIRCUIT VOLTAGE AT EGR BOOST SENSOR CONNECTOR NOTE: If DTC P0122 is also retrieved with P0107, then go to CONSTANT VOLTAGE troubleshooting procedure. Turn key to ON (Engine off). Measure voltage between EGR boost sensor terminal C (harness-side) and body ground. Is voltage within 4.5-5.5 V?	Yes	Check for poor connection of EGR boost sensor terminal C (harness-side). Repair or replace terminal as necessary. If okay, replace EGR boost sensor. Then go to Step 8.
5		No	Check for open circuit between PCM terminal 33 (harness-side) and EGR boost sensor terminal C (harness-side). Repair or replace suspected harness, then go to Step 8.
6	INSPECT EGR BOOST SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND Turn the ignition switch off. Disconnect PCM connector. Check continuity between EGR boost sensor terminal B (harness-side) and body ground. Is there continuity?	Yes	Repair or replace suspected harness, then go to Step 8.
6		No	Go to the next step.
7	INSPECT EGR BOOST SENSOR SIGNAL AND GROUND CIRCUIT FOR SHORT EACH OTHER Check continuity between EGR boost sensor terminals B and A (harness-side). Is there continuity?	Yes	Repair or replace suspected harness, then go to the next step.
7		No	Go to the next step.
8	VERIFY TROUBLESHOOTING OF DTC P2228 COMPLETED Make sure to reconnect all disconnected connectors. Turn key to ON (Engine off). Clear the DTC from the memory using the WDS or equivalent. Start engine. Access IAT PIDs using the WDS or equivalent. Make sure that IAT PID is above 10 °C {50 °F} Is same DTC present?	Yes	Replace PCM, then go to the next step.
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
9		No	Troubleshooting completed.