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12 connector containing the APP sensor circuits. 3. Turn ON the ignition, with the engine OFF. 4. Test the APP sensor 2 5-volt reference circuit for a short to voltage with a DMM. Refer to Did you find and correct the condition? - Go to Step 25 Go to Step 13 13 Test the APP sensor 2 5-volt reference circuit for an - Go to Step 25 Go to Step 14 14 Test the APP sensor 2 5-volt reference circuit for a - Go to Step 25 Go to Step 15 15 Test for a short between the APP sensor 2 5-volt - Go to Step 25 Go to Step 23 16 Measure resistance with a DMM connected between 0-5 ohm Go to Step 18 Go to Step 17 17 1. Turn OFF the ignition. 2. Disconnect the TAC module harness connector containing the APP sensor circuits. 3. Test the APP sensor 2 low reference circuit for an open or high resistance with a DMM. Refer Did you find and correct the condition? - Go to Step 25 Go to Step 23 18 1. Connect a fused jumper between the APP sensor 2 signal circuit and the APP sensor 2 2. Observe the APP sensor 2 voltage parameter with a scan tool. Does the scan tool indicate APP sensor 2 voltage is 0 V
2004 Hummer H2 2004 ENGINE PERFORMANCE Engine Controls Diagnosis (DTC P0507 (TAC) To DTC U0107) - 4.8L, 5.3L, and 6.0L - Hummer H2
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