Titan 2WD V8-5.6L (VK56) (2004)
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You should see the number 4.
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If you see any other number, Replace the Sonar Control Unit.
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Go to Section D1 of the appropriate Service Manual for control unit replacement instructions.
Check the Sonar Sensors (For Titan and Armada)
1.
Check each of the 4 sensors in the rear bumper.
2.
The sensor should be even with or just above the sensor housing (see Figure 6 and 7).
