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DTC P0230 Circuit Description The control module enables the fuel pump relay when the ignition switch is turned ON. The control module will 24 Inspect for an intermittent and for a poor connection at - Go to Step 30 Go to Step 27 25 Inspect for an intermittent and for a poor connection at - Go to Step 30 Go to Step 28 26 Inspect for an intermittent and for a poor connection at - Go to Step 30 Go to Step 29 27 Replace the throttle body assembly. Refer to Throttle - Go to Step 30 - 28 Replace the APP sensor. Refer to Accelerator Pedal - Go to Step 30 - 29 Replace the TAC module. Refer to Throttle Actuator - Go to Step 30 - 30 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 31 31 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 P0171/P0174 To DTC P0507 (TAC)) - 4.8L, 5.3L, and 6.0L - Hummer H2
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