NO.4 DIESEL PARTICULATE FILTER INDICATOR LIGHT FLASHES [MZR-CD 2.2]

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DIESEL PARTICULATE FILTER INDICATOR LIGHT FLASHES

DESCRIPTION

•  Diesel particulate filter indicator light flashes because the diesel particulate filter system can not dispose of diesel particulate.

POSSIBLE CAUSE

•  Driving condition is not in diesel particulate filter regeneration condition (Include DTC is stored in PCM)

•  Diesel particulate filter is not regenerated by manual regeneration procedure

•  Diesel particulate filter damaged or deterioration

•  Erratic signal input to PCM

―  Exhaust gas pressure sensor signal

•  Exhaust system restriction or clogging

•  PCM does not realize the diesel particulate trap amount in diesel particulate filter

4	DIESEL PARTICULATE FILTER INDICATOR LIGHT FLASHES
DESCRIPTION	• Diesel particulate filter indicator light flashes because the diesel particulate filter system can not dispose of diesel particulate.
POSSIBLE CAUSE	• Driving condition is not in diesel particulate filter regeneration condition (Include DTC is stored in PCM) • Diesel particulate filter is not regenerated by manual regeneration procedure • Diesel particulate filter damaged or deterioration • Erratic signal input to PCM ― Exhaust gas pressure sensor signal • Exhaust system restriction or clogging • PCM does not realize the diesel particulate trap amount in diesel particulate filter

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	Retrieve PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) Are any DTCs displayed?	Yes	DTC P242F:00, P2458:00, P2459:00, P2463:00 or P253F:00 is displayed: • Go to the next step. Other DTC is displayed: • Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD 2.2].) Communication error message is displayed: • Open circuit in wiring harness between main relay terminal E and PCM terminal 2I • Open circuit in wiring harness between main relay terminal C and PCM terminals 2C, 2F • Main relay is stuck open. • Open or poor ground circuit (PCM terminals 2A, 2B, 2D and 2E) • Poor connection of vehicle body ground
1		No	Go to the next step.
2	Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION [MZR-CD 2.2].) Is the engine oil level above the X line on dipstick?	Yes	Replace the specified engine oil. (See ENGINE OIL REPLACEMENT [MZR-CD 2.2].) Perform the engine oil data reset procedure. (See ENGINE OIL DATA RESET [MZR-CD 2.2].)
2		No	Go to the next step.
3	Inspect the exhaust system for restriction and clogging. Is there any restriction or clogging detected?	Yes	Repair or replace the malfunctioning part according to the inspection results.
3		No	Go to the next step.
4	Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) • PM_ACC • PM_GEN • PM_ACC_DSD Are the PID values 10 g/L {0.6 lb/ft³} or less?	Yes	Go to Step 8.
4		No	Go to the next step.
5	Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) • PM_ACC • PM_GEN • PM_ACC_DSD Is one of the PID monitored value 17 g/L {1.07 lb/ft³} or less?	Yes	Go to the next step.
5		No	Replace the oxidation catalytic converter, then go to Step 11. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
6	Perform the following: • Fuel injector injection amount correction (See FUEL INJECTOR INJECTION AMOUNT CORRECTION [MZR-CD 2.2].) • Diesel particulate filter regeneration (See DIESEL PARTICULATE FILTER REGENERATION [MZR-CD 2.2].)	—	Go to the next step.
7	Verify that the diesel particulate filter indicator light condition. Does the diesel particulate filter indicator light flash?	Yes	Go to the next step.
7		No	Go to Step 11.
8	Perform the diesel particulate filter regeneration procedure. (See DIESEL PARTICULATE FILTER REGENERATION [MZR-CD 2.2].)	—	Go to the next step.
9	Perform the diesel particulate filter assessment procedure. (See DIESEL PARTICULATE FILTER ASSESSMENT [MZR-CD 2.2].) Does the diesel particulate filter assessment procedure operate properly?	Yes	Go to the next step.
9		No	Reinspect from Step 1.
10	Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR-CD 2.2].) Verify the diesel particulate filter indicator light condition. Does the diesel particulate filter indicator light flash?	Yes	Go to Step 1.
10		No	Symptom troubleshooting is completed. • Go to the next step.
11	Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZR-CD 2.2].) • If the malfunction remains, inspect the related Service Information and perform the repair or diagnosis. ― If the vehicle is repaired, troubleshooting is completed. ― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.