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Home >> Cadillac >> 1998 >> Seville STS >> Repair and Diagnosis >> Engine Performance >> System >> 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

  1. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK , then 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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