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12 DMM. Note the measurement as "Supply voltage". 3. Connect a test lamp and a DMM in series between the 5-volt reference circuit and the low reference 4. Measure the amperage with the DMM. Note the measurement as "Amperage". Is the amperage equal to the specified value? 0 mA Go to Step 16 Go to Step 13 13 1. Remove the DMM from the circuit. 2. Connect the test lamp between the 5-volt reference circuit and the low reference circuit of the MAP 3. Measure the voltage from the 5-volt reference circuit at the test lamp to a good ground, with the 4. Subtract the "Load voltage drop" from the "Supply voltage". Note the result as "Supply voltage drop". 5. Divide the "Supply voltage drop" by the "Amperage". Is the result more than the specified value? IMPORTANT: Before any calculations are performed, ensure 5 ohm Go to Step 15 Go to Step 14 14 1. Measure the voltage from the low reference circuit of the MAP sensor at the test lamp to a good 2. Divide the "Low reference voltage drop" by the "Amperage". Is the result more than the specified value? IMPORTANT: Before any calculations are performed, ensure 5 ohm Go to Step 17 Go to Step 19
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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