NO.3 DIESEL PARTICULATE FILTER LAMP ILLUMINATES FREQUENTLY [MZR-CD (RF Turbo)]

id0103f1820100

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DIESEL PARTICULATE FILTER LAMP ILLUMINATES FREQUENTLY

DESCRIPTION

•  Diesel particulate filter lamp illuminates frequently because the diesel particulate filter system can not dispose of diesel particulates

POSSIBLE CAUSE

•  Driving conditions are not in diesel particulate filter regeneration condition

•  Diesel particulate filter is not regenerated by manual regeneration procedure

•  Diesel particulate filter is damaged or deteriorated

•  Erratic signal input to PCM

―  Exhaust gas pressure sensor signal

3	DIESEL PARTICULATE FILTER LAMP ILLUMINATES FREQUENTLY
DESCRIPTION	• Diesel particulate filter lamp illuminates frequently because the diesel particulate filter system can not dispose of diesel particulates
POSSIBLE CAUSE	• Driving conditions are not in diesel particulate filter regeneration condition • Diesel particulate filter is not regenerated by manual regeneration procedure • Diesel particulate filter is damaged or deteriorated • Erratic signal input to PCM ― Exhaust gas pressure sensor signal

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	Note • When the diesel particulate filter lamp illuminates frequency, it explains using owner’s manual to the customer the cause the running condition even if the procedure is executed. Connect the M-MDS to the DLC-2. Turn the engine switch to the ON position. Retrieve any DTCs. Are any DTCs displayed?	Yes	DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [MZR-CD (RF Turbo)].) Communication error message is displayed: Inspect the following: • Open circuit between PCM control relay and PCM terminal 119 or 120 • Open circuit PCM control relay and PCM terminal 105 • PCM control relay stuck open • Open or poor ground circuit (PCM terminal 1, 2, 3, 114 or 117) • Poor connection to vehicle body ground
1		No	No DTC is displayed: Go to the next step.
2	Perform the following; • Injection amount correction • Diesel particulate filter manual regeneration procedure • Diesel particulate filter assessment procedure	—	Go to the next step.
3	Inspect the connection of the hose at the exhaust gas pressure sensor. Is the hose connected properly?	Yes	Go to the next step.
3		No	Reconnect the hose properly, then go to the next step.
4	Inspect the engine oil amount. Is the engine oil amount above the X line on the dipstick?	Yes	Replace the specified engine oil. (See ENGINE OIL REPLACEMENT [MZR-CD (RF Turbo)].) Perform the engine oil initialize procedure.
4		No	Go to the next step.
5	Does the engine oil initialize procedure each engine oil replacements?	Yes	Troubleshooting completed, go to the next step.
5		No	Perform the engine oil initialize procedure.
6	Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR-CD (RF Turbo)].) • If the malfunction remains, inspect the related Service Information and perform repair or diagnosis. ― If the vehicle is repaired, troubleshooting completed. ― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.