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Is the voltage more than the specified value? Go to Step 7 Go to Step 8 7 1. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the MAP sensor 2. Observe the MAP sensor parameter with the scan tool. Is the voltage more than the specified value? 4.9 V Go to Step 11 Go to Step 9 8 Test the 5-volt reference circuit between the - Go to Step 13 Go to Step 10 9 Test the MAP sensor signal circuit between the PCM - Go to Step 13 Go to Step 10 10 Test for an intermittent and for a poor connection at - Go to Step 13 Go to Step 12 11 Replace the MAP sensor. Refer to Manifold - Go to Step 13 - 12 Replace the PCM. Refer to Powertrain Control - Go to Step 13 - 13 1. Clear the DTCs with a scan tool. 2. Turn OFF the ignition for 30 seconds. 3. Start the engine. 4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the Did the DTC fail this ignition? - Go to Step 2 Go to Step 14 14 Observe the Capture Info with a scan tool. - Go to Diagnostic Trouble Code (DTC) List System OK
2004 Hummer H2 2004 ENGINE PERFORMANCE Engine Controls Diagnosis (DTC P0068 To DTC P0141/P0161) - 4.8L, 5.3L, and 6.0L - Hummer H2
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