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Home >> Jaguar >> 1992 >> XJS 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Trouble Codes >> DTC 13: Manifold Absolute Pressure (Map) Sensor
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DTC 13: Manifold Absolute Pressure (Map) Sensor

  1. MAP sensor is located inside of PCM. Inspect vacuum line to MAP sensor for damaged or kinked vacuum hose. Replace as necessary. If vacuum hose is okay, disconnect MAP sensor vacuum hose at PCM. Start engine and ensure vacuum is present at MAP sensor hose. If vacuum is not present, locate and repair vacuum leak/blockage. If vacuum is present, go to next step.
  2. Check for ignition system faults. If faults are present, repair and retest.
  3. Check fuel pressure with engine under a load. Fuel pressure should be 35-45 psi (2.5-3.2 kg/cm2 ). If fuel pressure is not as specified, repair fuel delivery system as necessary. If fuel pressure is as specified, go to next step.
  4. Check fuel evaporation system electrical wiring harness connectors for proper installation. To aid in identifying fuel evaporation system component connectors, see EMISSION SYSTEMS in THEORY & OPERATION article. Clean or repair connectors as necessary. If connectors are okay, go to next step.
  5. Check PCM wiring harness for opens and shorts. Repair wiring as necessary. If wiring is okay, clear codes and recheck for Code 13. If Code 13 is still present, PCM maybe at fault.
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