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Home >> Oldsmobile >> 1999 >> Intrigue GL, 3.5 H >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Anti-Lock Brake System - TCS-ETS - DELPHI DBC 7) >> Diagnostic Tests >> DTC C1276: Delivered Torque Signal CKT Malfunction >> Testing Procedure

Testing Procedure

WARNING: This page is about a different car, the 1999 Buick Regal and 1999 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform DIAGNOSTIC SYSTEM CHECK  . After performing diagnostic system check, go to next step.
  2. Turn ignition off. Disconnect EBTCM connector. Connect pinout box and adapter cable to EBTCM harness connector only. Disconnect Powertrain Control Module (PCM) connector C2. Using DVOM, check resistance between terminal C1 of pinout box and PCM connector C2 terminal No. 9. If resistance measures 0-2 ohms, go to step  4 . If resistance does not measure 0-2 ohms, go to next step.
  3. Repair open or high resistance in circuit No. 464.
  4. Using DVOM, measure resistance between pinout box terminal C1 and terminal "D". If resistance is infinite, go to step  6 . If circuit is shorted to ground, go to next step.
  5. Repair circuit No. 464 for short to ground.
  6. Turn ignition on. Using DVOM, measure voltage between pinout box terminal C1 and terminal D. If voltage is present, go to next step. If no voltage is present, go to step  8 .
  7. Repair circuit No. 464 for short to voltage.
  8. Turn ignition off. Reconnect PCM connector C2 to PCM. Start engine. Using DVOM, measure voltage between pinout box terminal C1 and terminal D. If voltage is 4.5-5.5 volts, go to step  10 . If voltage is not 4.5-5.5 volts, go to next step.
  9. Replace EBTCM.
  10. Suspect defective PCM. Perform ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK in SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If on-board diagnostic system check passes, perform ABS DIAGNOSTIC SYSTEM CHECK. If on-board diagnostic system check does not pass, perform repairs recommended in self-diagnostics.
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