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6E-218 Engine Control System (4JH1)
DTC P1651 (Symptom Code A, B) (Flash Code 45)
Circuit Description
The engine control module (ECM) calculates the
desired fuel injection quantity and timing using data sent
from various sensors. These desired data are sent to
the fuel injection pump control unit (PCU) via a
controller area network (CAN) communication bus. The
PCU also receives signals from the internal inputs:
pump camshaft position (CMP) sensor that is located
inside the fuel injection pump to determine the cam ring
rotation angle and the fuel injection pump speed. The
fuel temperature (FT) sensor is internal the PCU. These
values are used to compare the desired values sent
from the ECM then PCU determines the injection timer
piston position and fuel injection quantity, and actuates
timing control valve (TCV) & fuel injection solenoid
valve based on control maps in the PCU.
The ECM monitors CAN operational status by expecting
a constant flow of messages from the PCU. If the ECM
fails to receive an expected message from the PCU,
this will set depending on what communication is lost.
Condition for Setting the DTC
•
The ECM detects that the PCU does not receive
the CAN messages from the ECM. (Symptom
Code A)
•
The ECM does not receive the CAN messages
from the PCU. (Symptom Code B)
Action Taken When the DTC Sets
•
The ECM illuminates the malfunction indicator
lamp (MIL) when the diagnostic runs and fails.
The ECM cuts the fuel injection.
Condition for Clearing the MIL/DTC
•
The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
•
A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids
•
If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
DTC P1651 (Symptom Code A, B) (Flash Code 45)
Schematic Reference:
Engine Controls Schematics
Connector End View Reference:
Engine Controls
Connector End Views or Engine Control Module (ECM)
Connector End Views
Step Action
Value(s)
Yes
No
1
Did you perform the Diagnostic System Check-
Engine Controls?
Go to Step 2
Go to Diagnostic
System Check-
Engine Controls
2
1. Install the scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Monitor the Diagnostic Trouble Code (DTC)
Information with the scan tool.
Does the DTC fail this ignition?
Go to Step 3
Go to Step 4
3
1. Turn OFF the ignition.
2. Disconnect the fuel injection pump control unit
(PCU) harness connector.
3. Connect a DMM across the controller area
network (CAN) harness (pins 1 and 2 of E-6
connector).
4. Measure the resistance across the CAN
terminals.
Is the resistance within the specified value?
110-130
Ω
Go to Step 4
Go to Step 9
4
1. Connect a DMM between the CAN Low signal
circuit (pin 1 of E-6 connector) and a known good
ground.
2. Turn ON the ignition, with the engine OFF.
Is the DMM voltage within the specified value?
1.5 – 2.5 volts
Go to Step 5
Go to Step 10
5
1. Keep the ignition switch ON, with the engine
OFF.
2. Connect a DMM between the CAN High signal
circuit (pin 2 of E-6 connector) and a known good
ground.
Is the DMM voltage within the specified value?
3.0 – 4.0 volts
Go to Step 6
Go to Step 11
Содержание 4ja1
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Страница 33: ...ENGINE MECHANICAL 6A 11 Timing Gear Case Pulley Housing Timing Gear and Camshaft N m kg m lb ft RTW46AXF000601...
Страница 34: ...6A 12 ENGINE MECHANICAL Cooling and Lubricating System N m kg m lb ft RTW46AXF000701...
Страница 35: ...ENGINE MECHANICAL 6A 13 Intake Manifold 4JA1TC 4JH1TC N m kg m lb ft RTW36AXF000201...
Страница 36: ...6A 14 ENGINE MECHANICAL EGR Valve EGR Pipe EGR Cooler RTW46AXF000801...
Страница 37: ...ENGINE MECHANICAL 6A 15 Exhaust Manifold and Turbocharger 4JA1L RTW46AXF000901...
Страница 38: ...6A 16 ENGINE MECHANICAL Exhaust Manifold and Turbocharger 4JA1TC 4JH1TC N m kg m lb ft RTW86AXF000301...
Страница 39: ...ENGINE MECHANICAL 6A 17 Engine Electricals N m kg m lb ft RTW36AXF000501...
Страница 40: ...6A 18 ENGINE MECHANICAL Fuel Injection System 4JA1L N m kg m lb ft RTW86AXF000201...
Страница 41: ...ENGINE MECHANICAL 6A 19 Fuel Injection System 4JA1TC N m kg m lb ft RTW46AXF001201...
Страница 42: ...6A 20 ENGINE MECHANICAL Fuel Injection System 4JH1TC N m kg m lb ft RTW46AXF001301...
Страница 43: ...ENGINE MECHANICAL 6A 21 Engine Mounting Bracket N m kg m lb ft 022R300001...
Страница 162: ...MEMO...
Страница 187: ...FUEL SYSTEM 6C 5 For EURO III model RTW46AMF000201...
Страница 219: ...FUEL SYSTEM 6C 37 SPECIAL TOOLS ILLUSTRATION TOOL NUMBER TOOL NAME 5 8840 2602 0 J 39765 Remover fuel pump retainer ring...
Страница 220: ...MEMO...
Страница 224: ...6D 4 ENGINE ELECTRICAL CHARGING CIRCUIT DIAGRAM RTW46DSH005101 STARTING CIRCUIT DIAGRAM RTW46DSH005501...
Страница 225: ...ENGINE ELECTRICAL 6D 5 TORQUE SPECIFICATIONS GENERATOR N m kg m Ib ft RTW86DLF000101...
Страница 226: ...6D 6 ENGINE ELECTRICAL STARTER MOTOR N m kg m Ib ft RTW86DLF000201...
Страница 254: ...MEMO...
Страница 261: ...Engine Control System 4JH1 6E 7 Engine Controls Schematics Power Distribution 1 RTW86EXF004801...
Страница 262: ...6E 8 Engine Control System 4JH1 Power Distribution 2 RTW86EXF004901...
Страница 263: ...Engine Control System 4JH1 6E 9 Starting System RTW86EXF005001...
Страница 264: ...6E 10 Engine Control System 4JH1 Charging System RTW86EXF005101...
Страница 265: ...Engine Control System 4JH1 6E 11 ECM Power and PCU RTW86EXF003001...
Страница 266: ...6E 12 Engine Control System 4JH1 ECM Ground and DLC RTW86EXF005201...
Страница 267: ...Engine Control System 4JH1 6E 13 Gauges and Warning Lamps RTW86EXF003201...
Страница 268: ...6E 14 Engine Control System 4JH1 A C Neutral Switch Resister CKP Sensor APP Sensor and Idle Switch RTW86EXF003301...
Страница 269: ...Engine Control System 4JH1 6E 15 MAF IAT Vacuum Pressure and ECT Sensors RTW86EXF003401...
Страница 275: ...Engine Control System 4JH1 6E 21 1 Legend 1 Vehicle Speed Sensor VSS...
Страница 536: ...MEMO...
Страница 555: ...EXHAUST SYSTEM 6F 19 SPECIAL TOOLS ILLUSTRATION TOOL NUMBER TOOL NAME 901RX00143 5 8840 0075 0 Pressure Gauge...
Страница 558: ...6H 2 ACCELERATOR CONTROL REMOVAL AND INSTALLATION 4JA1T L RHD RTW46HLF000301...
Страница 559: ...ACCELERATOR CONTROL 6H 3 4JA1T L LHD RTW46HLF000601...
Страница 560: ...6H 4 ACCELERATOR CONTROL 4JA1TC 4JH1TC RHD RTW46HLF000201...
Страница 561: ...ACCELERATOR CONTROL 6H 5 4JA1TC 4JH1TC LHD PTW46BMF000101...
Страница 564: ...No TF4JE WE 1101...