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Home >> Cadillac >> 1995 >> Eldorado Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Engine Control System - Tests W/Codes) >> Diagnostic Trouble Codes >> DTC P1370 - Ignition Control (Ic) Module 4X Reference Circuit Too Many Pulses >> Diagnostic Procedures
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Diagnostic Procedures

WARNING: This page is about a different car, the 1996 Cadillac Seville, 1996 Cadillac Eldorado, and 1996 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
  2. Check for possible sources of Electromagnetic Interference (EMI), such as spark wires routed too close to IC module, high power transmitter operating in the vicinity or a battery charger causing EMI. Correct problem, if present. If EMI is not present, go to next step.
  3. Clear DTC(s) and retest. If DTC P1370 resets, go to next step. If DTC does not reset, fault is not present.
  4. Check fuel control circuit terminal contact IC module connector C4 and PCM harness connector C2. Repair as necessary. If terminal contacts are okay, go to next step.
  5. Replace IC module.
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