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NO.15 EMISSION COMPLIANCE [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513)

BME010300103220

15 | Emission compliance
DESCRIPTION | • Emission compliance test is failed.
POSSIBLE CAUSE | • Vacuum lines leakage or blockage • Cooling system malfunction • Spark plug malfunction • Leakage from intake manifold • Erratic or no signal from CMP sensor
• Inadequate fuel pressure
• PCV valve malfunction or incorrect valve installation
• EGR valve malfunction
• Exhaust system clogging
• Fuel tank ventilation system malfunction
• Charcoal canister damage
• Excessive carbon built up in combustion chamber
• Improper engine compression
• Improper valve timing

  Warning

  • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:

  - Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
  - Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual.
  (See BEFORE SERVICE PRECAUTION [AJ].)
  (See AFTER SERVICE PRECAUTION [AJ].)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Inspect the following:

  - Vacuum lines for leakage or blockage
  - Electrical connections
  - Proper maintenance schedule followed
  - Intake-air system and air cleaner element concerns: obstructions, leakage or dirtiness

• Are all items normal?
Yes
Go to the next step.
No | Service if necessary. Repeat Step 1.
2 | • Connect the WDS or equivalent to the DLC-2. • Turn the ignition switch to the ON position (Engine off). • Retrieve any DTCs. • Is "PASSED" displayed? | Yes | No DTC is displayed: • Go to the next step.
No | DTC is displayed: • Go to the applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513).)
3 | • Is any other driveability concern present? | Yes | Go to the applicable symptom troubleshooting. (See SYMPTOM DIAGNOSTIC INDEX [AJ].)
No | Go to the next step.
4 | • Connect the WDS or equivalent to the DLC-2. • Access ECT PID. • Warm up the engine and run it at idle. • Verify ECT PID is correct. (See PCM Inspection Using the WDS or Equivalent.)
• Is ECT PID correct?
Yes
Go to the next step.
No | Inspect for coolant leakage. Inspect the cooling fan and operation or the thermostat operation.
5 | • Is strong blue spark visible at each disconnected high-tension lead while cranking the engine? | Yes | Inspect for the following: • Spark plugs malfunction • CMP sensor is installed improperly. • Damage of trigger wheel on camshaft • Open or short circuit on CMP sensor
• Open or short circuit between CMP sensor and PCM terminal 85 or 86
Repair or replace the malfunctioning part.
• If normal, go to the next step.
No | Inspect the ignition coil and connector.
6 | • Install a fuel pressure gauge between the pulsation damper and the fuel distributor. • Start the engine and run it at idle. • Measure fuel line pressure at idle. • Is fuel line pressure correct at idle? (See FUEL LINE PRESSURE INSPECTION [AJ].) | Yes | Go to the next step.
No | Zero or low: • Inspect fuel pump circuit. • Inspect for open fuel pump relief valve. • Inspect for fuel leakage inside the pressure regulator. • Inspect for clogged main fuel line. High:
• Inspect the pressure regulator for high pressure cause.
• Inspect for clogged fuel return line.
7 | • Remove and shake the PCV valve. • Does the PCV valve rattle? | Yes | Go to the next step.
No | Replace the PCV valve.
8 | • Inspect for fuel saturation inside the charcoal canister. • Is excess amount of liquid fuel present in the charcoal canister? | Yes | Replace the charcoal canister.
No | Inspect the fuel tank vent system. Then, go to the next step.
9 | • Inspect for restriction in the exhaust system. • Is there any restriction? | Yes | Inspect the exhaust system.
No | Inspect the EGR system.
10 | • Verify test results.

  - If normal, return to diagnostic index to service any additional symptoms.
  - If malfunction remains, inspect related Service Information and perform repair or diagnosis.

  • If vehicle is repaired, troubleshooting completed.
  • If vehicle is not repaired or additional diagnostic information is not available, replace or reprogram the PCM.