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DTC C0550: ABS Control Module Internal Fault: Troubleshooting

TEST PROCEDURE - ABS CONTROL MODULE INTERNAL FAULT

Step Action Value (s) Yes No
1 Use the scan tool to determine if any other DTCs are set.
Are other DTCs set?		 - Go to the chart for the DTCs Go to Step 2
2 Clear all DTCs and road test the vehicle.
Does DTC C0550 set again?		 - Go to Step 4 Go to Step 3
3
  1. Check all wiring harness connectors and terminals, especially those at the EBCM, for any condition that could cause an intermittent.
  2. Repair any problems found.

Is the repair complete?		 - System OK -
4
  1. Turn the ignition switch to OFF.
  2. Disconnect EBCM connector J1.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between ground and terminals 15, 17 and 18 (2006) or terminals 20, 14, and 1 (2007) of the EBCM harness connector J1.

Is the voltage equal to the specified value?		 11 - 14 V Go to Step 6 Go to Step 5
5
  1. Check the voltage supply and the ground connections to the EBCM.
  2. Repair any open or high resistance found.

Is the repair complete?		 - System OK -
6 Check the EBCM connector J1 for any ineffective terminals.
Are there any problems?		 - Go to Step 7 Go to Step 8
7 Repair any connector problem found.
Is the repair complete?		 - System OK -
8 Clear all DTCs and road test the vehicle.
Does DTC C0550 set again?		 - Go to Step 9 System OK
9 Replace the EBCM unit.
Is the repair complete?		 - System OK -
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