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DTC 13, DIC Switches Open Or Shorted To Battery: Testing

  1. Note all stored current and history codes. Turn ignition switch to OFF position. Remove DIC assembly from instrument panel and disconnect connector. Turn ignition switch to ON position. Using DVOM, measure voltage between DIC connector terminal No. 2 and ground. If voltage is zero volts, go to next step. If voltage is greater than 5.5 volts, go to step 3). If voltage is 4.5-5.5 volts, go to step 4).
  2. Using DVOM, backprobe CCM Green connector, terminal E11 to ground and measure voltage. If voltage is about 5 volts, repair open in DIC switch detection input circuit. If voltage is zero volts, check for poor connections at CCM. If connections are okay, replace CCM.
  3. Turn ignition switch to OFF position. Disconnect CCM Green connector. Turn ignition switch to ON position. Using DVOM, measure voltage between CCM Green connector, terminal E11 and ground. If battery voltage is present, repair short to battery in DIC switch detection input circuit. If battery voltage is not present, replace CCM.
  4. Using DVOM, measure voltage between DIC connector terminals No. 2 and 3. If voltage is zero volts, check for open in reference ground circuit. If reference ground is okay, check for poor connections at CCM. If connections are okay, replace CCM. If voltage is 4.5-5.5 volts, go to next step.
  5. No problem is present. If code is set as current, replace DIC switches. If code is set as history, problem may be intermittent. Try to recreate fault while performing test by wiggling wiring and connectors. Check for poor connections at all connectors that may be causing intermittent condition. Go to next step.
  6. If after pressing DIC button, desired switch function is not performed, but instead another function is performed, DIC switches may be internally open or shorted. If switch is shorted to battery, activating switch will send incorrect signal to CCM since voltage added to circuit from short will confuse CCM. If switch is open, no result will occur when switch is activated. Tech 1 can be used to monitor DIC functions while activating DIC switches.
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