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Diagnostic Aids

Typical causes for DTC C1101 to set:

DTC C1101

Step Action Values Yes No
1 Did you perform the Diagnostic System Check - ABS? - Go to Step 2  Go to Diagnostic System Check - ABS 
2
  1. Disconnect the electronic brake control module (EBCM) connector.
  2. Turn ON the ignition.
  3. Check the voltage between terminal 4 and 8 of the EBCM connector.
  4. Check the voltage between terminal 4 and 24 of the EBCM connector.
Were the voltages within the specified range?
9.4-17 V Go to Step 3  Go to Step 4 
3
  1. Replace the EBCM. Refer to Brake Modulator Assembly Replacement .
  2. Check again the diagnostic circuit.
Did you find any problem?
- Go to Step 1  System OK
4 Check the battery voltage between the positive and negative terminals of the battery.
Is the voltage within the specified value?
9.4-17 V Go to Step 6  Go to Step 5 
5 Replace the battery. Refer to Battery and Battery Tray Replacement .
Did you complete the replacement
- Go to Step 1  -
6 Check the resistance between terminal 4 of the EBCM connector and the terminal (+) of the battery.
Is the resistance less than specified?
1 Ω Go to Step 8  Go to Step 7 
7
  1. Check both the terminals mentioned in step 6.
  2. Repair the terminals, as needed.
  3. Check the EBCM connector and wiring harness.
  4. Repair or replace the wiring harness as needed.
Did you find and correct the condition?
- System OK -
8 Check the resistance between the terminal 8, 24, and G104.
Does the resistance measure less than the specified value?
1 Ω Go to Step 10  Go to Step 9 
9 Repair or replace the EBCM connector or G104.
Did you complete the repair?
- Go to Step 1  -
10
  1. Connect a voltmeter to the positive and negative terminal of the battery.
  2. Turn OFF all accessories.
  3. Start the engine.
  4. Monitor the voltage on the meter with the engine running at 2,000 RPM for several seconds.
  5. And also check the voltage between the terminal 4 and 8. And also check the voltage between the terminal 4 and 24.
Do the voltages measure less than the specified value?
17 V Go to Step 1  Go to Step 11 
11 Repair the alternator.
Did you complete the repair?
- Go to Step 1  -