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Is the TP indicated angle parameter within the Go to Step 9 Go to DTC P0120 9 1. Turn OFF the ignition. 2. Inspect for the following conditions: z A restricted or collapsed air z A misaligned air intake duct z A dirty or deteriorating air filter z Any objects blocking the air inlet z Any contamination or debris on z Any water intrusion in the z Any vacuum leak downstream of z A MAF sensor wiring harness z Any type of restriction in the Did you find and correct the condition? - Go to Step 14 Go to Step 10 10 1. Disconnect the harness connector of the MAF sensor. 2. Measure the battery voltage with a DMM. 3. Turn ON the ignition, with the engine OFF. 4. Connect a test lamp between the ignition 1 voltage circuit of the MAF 5. Connect a DMM to the probe of the test lamp and a good ground. Refer to B+
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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