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3 System Check - Go to Step 4 4 1. Install a scan tool. 2. Turn ON the ignition, with the engine OFF. 3. With a scan tool, observe the Crank Request Signal parameter in the 4. Turn the ignition switch to the START position. Does the scan tool display Yes? Go to Step 5 Go to Power Mode Mismatch 5 1. Turn ON the ignition, with the engine OFF. 2. With a scan tool, observe the Starter Relay Command parameter in the 3. Turn the ignition switch to the START position. Does the scan tool display Yes? Go to Step 7 Go to Step 6 6 1. Turn ON the ignition, with the engine OFF. 2. Verify that the transmission is in Park or Neutral. 3. With a scan tool, observe the TR Sw. parameter in the PCM data list. Does the scan tool display Park or Go to Step 7 Go to Range 7 Turn the ignition switch to the START Go to Step 10 Go to Step 8 1. Turn OFF the ignition. 2. Disconnect the PCM CNTRL relay.
2007 Hummer H3 2007 ENGINE Engine Electrical - H3
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