SB-12-J-002-A
Service Bulletin Details
Public Details for: SB-12-J-002-A
Isuzu: experiencing reduced engine vehicle speed and check engine malfunction indicator light illuminated. *pe
Models from 2012
2012 ISUZU N-SERIES |
Models from 2011
2011 ISUZU N-SERIES |
SB-10044167-2374 BULLETIN NUMBER: SB12-J-002A IMPORTANT SERVICE INFORMATION FOR: 9 9 9 9 9 SERVICE MANAGER SERVICE ADVISOR TECHNICIAN PARTS DEPARTMENT WARRANTY PERSONNEL ISSUE DATE: MARCH 2012 GROUP: ENGINE ILLUMINATED CHECK ENGINE MALFUNCTION INDICATOR LIGHT (DTC P0087) – SUPPLY PUMP BOLT W/FILTER RESTRICTION AFFECTED VEHICLES 2011-2013MY Isuzu N-Series Equipped with 5.2L 4HK1 Diesel Engine This bulletin supersedes SB12-J-002. This bulletin is being revised to update Model Years. Please disregard bulletin SB12-J-002. INFORMATION Some customers may experience various drivability concerns along with an illuminated Check Engine Malfunction Indicator Light (MIL) and reduced engine vehicle speed. Technician diagnosis finds DTC P0087. In some cases, normal diagnosis may not identify the root cause for setting this DTC. If normal diagnosis cannot determine the cause of P0087, follow the below service procedure information to identify other root cause(s). SERVICE PROCEDURE Step Description 1 Download Health Report Data 2 Check the following for an abnormal condition: • • • • • Fuel level Air in the fuel lines Fuel rail pressure actual vs. desired Fuel rail pressure sensor zero Fuel supply pump low side pressure Value Yes No _ Go to Step 2 _ Problem Resolved Go to Step 3 Go to Step 5 Go to Step 4 Was a problem found and corrected? 3 Check that the fuel supply pump low side fuel pressure at 2200 rpm. Is the pressure below the specified value? 116 psi (800 kPa) Step Description 4 Check the following to parts for contamination: • Fuel Sedimenter filter • Eye Bolt (see figure 1) Value Yes No _ Go to Step 5 Go to Step 6 _ Go to Step 6 _ Go to Step 7 Was contamination/rust found in either part? 5 The fuel system has been contaminated. Replace the following parts: • Fuel Sedimenter filter • Main fuel filter • Eye Bolt (see figure 1) • Supply Pump Bolt w/filter* (see figure 2) Find the source of the contamination. Drain the fuel tank, inspect the fuel tank pick up tube, and the fuel gauge sending unit. Replace the following parts as necessary: • Fuel tank pick up tube • Fuel gauge sending unit • Drain plug Was the repair completed? 6 Reprogram the ECM if the calibration ID is lower than the one listed in the reference chart provided in this bulletin. Road test the vehicle to confirm the DTC does not reset. Problem Resolved Did the code reset? 7 Replace the Fuel Rail Pressure (FRP) Regulator/Suction Control Valve (SCV). Road test the vehicle to confirm the DTC does not reset. _ Contact Problem Technical Resolved Assistance Did the code reset? * NOTE: It is necessary to remove Supply Pump to change Supply Pump Bolt with filter. 2 Calibration ID numbers for reference. Model Year 2011 2012 Trans. GVW Calibration ID AUTO 14,500 lb GVWR 98202019 – or Higher AUTO 17,950 / 19,500 lb GVWR 98202020 – or Higher MANUAL 14,500 lb GVWR 98201976 – or Higher MANUAL 17,950 / 19,500 lb GVWR 98201977 – or Higher AUTO 14,500 lb GVWR 98201978 – or Higher AUTO 17,950 / 19,500 lb GVWR 98201979 – or Higher MANUAL 14,500 lb GVWR 98201980 – or Higher MANUAL 17,950 / 19,500 lb GVWR 98201981 – or Higher Back of Supply Pump Side Figure 1 - Eye Bolt Figure 2 - Supply Pump Bolt w/Filter location Torque the new eye bolt to 17.2 Nm (12 lb ft) Torque the hex nut to 17.2 Nm (12 lb ft) PARTS INFORMATION The following new parts are available from AIPDN. Part Number 8-98200-752-0 8-98204-986-0 8-98201-967-0 8-98202-438-0 8-98203-548-0 8-98202-438-0 8-98203-549-0 Description Eye Bolt Supply Pump Bolt w/Filter Pipe Assembly Drain Plug Tank (Sending) Unit Drain Plug Tank (Sending) Unit Qty 1 1 1 1 1 1 1 Comment Center Tank Center Tank Center Tank Side Tank Side Tank 3 WARRANTY INFORMATION For vehicles covered under the basic warranty, the below labor operation codes are provided to better identify this repair. Please select the appropriate labor operation based on the repair. Labor Code J8004 Labor Time Comments Supply Pump Bolt w/Filter, Replace 1.9 Includes diagnosis Add: Fuel Tank Pick Up Pipe and Tank (Sending) Unit, Replace 1.6 Add: ECM Reprogramming 0.3 Add: Fuel Rail Pressure (FRP) Regulator/Suction Control Valve (SCV), Replace 0.2 Description 4