fuel CHRYSLER VOYAGER 2001 Manual Online

Symptom:
*CHECKING THE ENGINE MECHANICAL SYSTEMS
POSSIBLE CAUSES
CHECKING ENGINE MECHANICAL SYSTEMS
TEST ACTION APPLICABILITY
1NOTE: The following items should be checked as a possible cause of a
Driveability or No-Start problem.
WARNING: Do not attempt to remove or separate high pressure fuel line.
Attempting to do so could result in severe bodily injury or death.
Engine Valve Timing - must be within specification
Engine Compression - must be within specifications
Camshaft Lobes - check for abnormal wear
Camshaft Position Sensor - check the camshaft position sensor tooth for debris and
deterioration
Crankshaft Position Sensor - check the crankshaft tone wheel for debris and
deterioration
Engine Exhaust System - must be free of any restriction
Engine Drive Sprocket - must be properly positioned
Power Brake Booster - must be free of any vacuum leaks
Fuel - must have adequate supply and must be free of contamination and gasoline
Fuel Injectors - must not be plugged or restricted
Fuel Injection Pump - must be producing the correct output volume and pressure
Inspect the Fuel Lines, Fuel Filter and Fuel Pressure Relief Valve for signs of
restriction and leaks
NOTE: Check for any Technical Service Bulletins that may relate to the
problem.
Are there any problems evident?All
Ye s®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No®Test Complete.
194
DRIVEABILITY - DIESEL

Symptom:
*CHECKING THE LIFT PUMP MOTOR OPERATION
POSSIBLE CAUSES
LIFT PUMP OUTPUT TEST
FUSED B+ CIRCUIT OPEN
LIFT PUMP RELAY
LIFT PUMP RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
LIFT PUMP RELAY OUTPUT CIRCUIT SHORTED TO GROUND
LIFT PUMP RELAY OUTPUT CIRCUIT OPEN
LIFT PUMP GROUND CIRCUIT OPEN
LIFT PUMP MOTOR
TEST ACTION APPLICABILITY
1NOTE: If any Fuel Lift Pump DTCs are present, diagnose the DTCs first.
Turn the ignition on.
With the DRB, actuate the Lift Pump Relay.
Gain access to the Lift Pump Motor to determine if it is cycling on and off.
Does the Lift Pump Motor cycle on and off?All
Ye s®Go To 2
No®Go To 3
2NOTE: The Lift Pump fuel output must be sufficient to prime the Injector
Pump.
Refer to the Service Information to test the Lift Pump pressure and volume output.
Did the Lift Pump pass the Lift Pump pressure and volume test?All
Ye s®Test Complete.
No®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
3NOTE: If the Lift Pump Relay fuse is open, refer to the system schematics
for all circuits that are powered by the Lift Pump Relay fuse to determine
the cause of the blown fuse.
Remove the Lift Pump Relay from the IPM.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the Lift
Pump Relay connector in the IPM.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the Fused B+ (Fuse) circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
197
DRIVEABILITY - DIESEL

Symptom:
*ENGINE CRANKS BUT WILL NOT START
POSSIBLE CAUSES
CHECKING FOR ECM CODES
CHECKING FOR SKIM CODES
CHECKING THE ECT SENSOR
CHECKING THE GLOW PLUG OPERATION
ENGINE DRIVE BELT
FUEL INJECTOR DRIVER CIRCUIT(S) SHORTED TO GROUND
FUEL PRESSURE SENSOR
FUEL PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT OPEN
FUEL PRESSURE SENSOR SIGNAL CIRCUIT OPEN
FUEL SUPPLY CONTAMINATION
FUEL SYSTEM PRESSURE MECHANICAL
FUEL SYSTEM RESTRICTION
SENSOR GROUND OPEN
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the ECM DTCs.
Does the DRBIIItdisplay any ECM DTCs?All
Ye s®Refer to symptom list for problems related to ECM DTC.
Perform NO START VERIFICATION - VER-1.
No®Go To 2
2 Turn the ignition on.
With the DRBIIIt, read the SKIM DTCs.
Does the DRBIIItdisplay any SKIM DTCs?All
Ye s®Refer to symptom list for problems related to SKIM DTC.
Perform NO START VERIFICATION - VER-1.
No®Go To 3
3 Using a temperature probe, check the vehicle temperature near the ECT Sensor.
Turn the ignition on.
With the DRBIIItin Sensors, read the ECT Sensor temperature.
Compare the temperature probe reading with the DRB reading.
Are the two readings within 10ÉC of each other?All
Ye s®Go To 4
No®Repair as necessary.
Perform NO START VERIFICATION - VER-1.
207
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
4NOTE: Prior to performing this test, be sure to check the Glow Plug Relay
operation. Refer to CHECKING GLOW PLUG OPERATION for the related
symptom(s).
Refer to the Service Information and check the Glow Plugs for proper operation.
Are the Glow Plugs operating properly?All
Ye s®Go To 5
No®Repair as necessary.
Perform NO START VERIFICATION - VER-1.
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all 4 Fuel Injector harness connectors.
Measure the resistance between Ground and each Fuel Injector Driver circuit at it's
respective Fuel Injector harness connector.
Is the resistance below 1000 ohms for any of the measurements?All
Ye s®Repair the Fuel Injector Driver circuit(s) for a short to ground.
Perform NO START VERIFICATION - VER-1.
No®Go To 6
6 Inspect and fuel system lines for restrictions, leaks or other problems.
Is there any evidence of problems?All
Ye s®Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No®Go To 7
7 Turn the ignition off.
Using the DRB lab scope, backprobe the CMP Sensor Signal circuit at the CMP
Sensor harness connector.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRB.
NOTE: Refer to Charts and Graphs to view a correct CMP Sensor signal.
Does the DRB display a steady clean CMP Signal pattern?All
Ye s®Go To 8
No®Perform Test for DTC P0340-Camshaft Position Sensor Circuit
Static Plausibility.
Perform ROAD TEST VERIFICATION - VER-2.
8 Turn the ignition off.
Using the DRB lab scope, backprobe both of the CKP Sensor Signal circuits at the
CKP Sensor harness connetor.
NOTE: Refer to Charts and Graphs to view a correct CKP Sensor signal.
Start the engine, if the engine will not start, crank the engine for several seconds
while monitoring the DRB.
Does the DRB display a steady clean CKP Signal pattern for each circuit?All
Ye s®Go To 9
No®Perform Test for DTC P0340-Crankshaft Position Sensor Circuit
Dynamic Plausibility.
Perform ROAD TEST VERIFICATION - VER-2.
208
DRIVEABILITY - DIESEL
*ENGINE CRANKS BUT WILL NOT START ÐContinued

TEST ACTION APPLICABILITY
9 Refer to the Service Information and perform the fuel pressure test.
Is the fuel pressure within specification?All
Ye s®Go To 10
No®Repair as necessary.
Perform NO START VERIFICATION - VER-1.
10 Refer to the Service Information and perform the fuel pressure test. Note the test
results.
Using the DRB, read the Fuel Pressure PSI and compare the two readings.
Are the two readings within 500 psi of each other?All
Ye s®Go To 11
No®Go To 12
11 Refer to the Service Information to ensure the Engine Drive Belt is installed correctly
and the camshaft and crankshaft gears are timed correctly.
Were any problems found?All
Ye s®Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No®Check the fuel supply for contamination.
Perform NO START VERIFICATION - VER-1.
12 Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Fuel Pressure Sensor Signal circuit.
Is the resistance below 10.0 ohms?All
Ye s®Go To 13
No®Repair the Fuel Pressure Sensor Signal circuit for an open.
Perform NO START VERIFICATION - VER-1.
13 Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Fuel Pressure Sensor 5-volt Supply circuit.
Is the resistance below 10.0 ohms?All
Ye s®Go To 14
No®Repair the Fuel Pressure Sensor 5-volt Supply circuit for an open.
Perform NO START VERIFICATION - VER-1.
14 Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 10.0 ohms?All
Ye s®Replace the Fuel Pressure Sensor in accordance with the Service
Information.
Perform NO START VERIFICATION - VER-1.
No®Repair the Sensor Ground circuit for an open.
Perform NO START VERIFICATION - VER-1.
209
DRIVEABILITY - DIESEL
*ENGINE CRANKS BUT WILL NOT START ÐContinued

8.4 FUEL SYSTEM
8.5 RELAYS
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COMPONENT LOCATIONS

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAYCAV CIRCUIT FUNCTION
1 Z130 14BK/BR GROUND
2 Z131 14BK/DG GROUND
3 K20 14BR/GY GENERATOR FIELD CONTROL
4 K342 14BR/WT ECM/PCM RELAY OUTPUT
5 K342 14BR/WT ECM/PCM RELAY OUTPUT
6- -
7 D25 20WT/VT PCI BUS
8 K944 20BK/GY CAMSHAFT POSITION SENSOR SHIELD GROUND
9 K44 20DB/GY CAMSHAFT POSITION SENSOR SIGNAL
10 - -
11 K37 20DB/YL BOOST PRESSURE SENSOR SIGNAL
12 K55 20DB/OR MASS AIR FLOW SENSOR SIGNAL
13 K78 20GY FUEL PRESSURE SENSOR SIGNAL
14 - -
15 K22 20OR/DB ACCELERATOR PEDAL POSITION SENSOR SIGNAL
16 K80 20DB/TN FUEL PRESSURE SENSOR GROUND
17 - -
18 - -
19 N1 20DB/OR FUEL HEATER RELAY OUTPUT
20 Z138 20BK/OR GROUND
21 K900 20DB/DG SENSOR GROUND
22 F202 20PK/GY IGNITION SWITCH OUTPUT (RUN-START)
23 F851 20LB/PK SENSOR REFERENCE VOLTAGE B
24 K3 20BR/OR CRANKSHAFT POSITION SENSOR SIGNAL NO. 1
25 - -
26 - -
27 - -
28 - -
29 - -
30 G6 20VT/GY ENGINE OIL PRESSURE SENSOR SIGNAL
31 F853 20LG/PK WATER IN FUEL SENSOR SIGNAL
32 K25 20BR/TN BATTERY TEMPERATURE SENSOR SIGNAL
33 - -
34 K167 20BR/YL ACCELERATOR PEDAL POSITION SENSOR GROUND
35 K853 20DB/BR ACCELERATOR PEDAL POSITION SENSOR 5 VOLT SUPPLY
36 C18 20LB/BR A/C PRESSURE SENSOR SIGNAL
37 K89 20DB/WT ENGINE OIL TEMPERATURE SENSOR SIGNAL
38 V37 20VT/TN SPEED CONTROL SWITCH SIGNAL
39 - -
40 K2 20TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
41 K21 20DB/LG INTAKE AIR TEMPERATURE SENSOR SIGNAL
42 Z122 18WT GROUND (DRAIN)
43 K24 20BR/LB CRANKSHAFT POSITION SENSOR SIGNAL NO. 2
44 - -
45 - -
46 - -
47 L50 20WT/TN PRIMARY BRAKE SWITCH SIGNAL
48 B29 20DG/WT SECONDARY BRAKE SWITCH SIGNAL
49 T751 20YL IGNITION SWITCH OUTPUT (START)
50 F855 20PK/YL SENSOR REFERENCE VOLTAGE A
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CONNECTOR PINOUTS

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAYCAV CIRCUIT FUNCTION
51 - -
52 K121 20DB BOOST PRESSURE SENSOR GROUND
53 - -
54 K957 20BK/OR MASS AIR FLOW SENSOR GROUND
55 N7 20DB/OR VEHICLE SPEED SENSOR SIGNAL
56 C918 20BK/LB A/C PRESSURE SENSOR GROUND
57 - -
58 K4 20BK/LB LOW IDLE POSITION SWITCH GROUND
59 - -
60 K9 20LB FUEL PRESSURE SENSOR 5 VOLT SUPPLY
61 K51 20BR/WT ECM/PCM RELAY CONTROL
62 - -
63 D21 20WT/BR SCI TRANSMIT
64 K151 20WT LOW IDLE POSITION SWITCH SENSE
65 - -
66 K936 20BR/YL ENGINE OIL PRESSURE SENSOR GROUND
67 - -
68 - -
69 C13 20LB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
70 N210 20DB/DG LOW SPEED RADIATOR FAN RELAY CONTROL
71 - -
72 N21 20DB/TN LIFT PUMP RELAY CONTROL
73 - -
74 T752 20DG/OR ENGINE STARTER MOTOR RELAY CONTROL
75 - -
76 - -
77 K152 20DB/WT GLOW PLUG RELAY CONTROL
78 N122 20DB/YL HIGH SPEED RADIATOR FAN DUAL RELAY CONTROL
79 - -
80 K87 20BR FUEL PRESSURE SOLENOID CONTROL
81 K87 20BR FUEL PRESSURE SOLENOID CONTROL
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CONNECTOR PINOUTS

ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAYCAV CIRCUIT FUNCTION
82 - -
83 - -
84 - -
85 - -
86 T753 20DG/YL IGNITION SWITCH OUTPUT (START)
87 - -
88 K35 20GY/YL EGR SOLENOID CONTROL
89 K35 20GY/YL EGR SOLENOID CONTROL
90 - -
91 - -
92 - -
93 - -
94 - -
95 - -
96 - -
97 - -
98 - -
99 - -
100 - -
101 - -
102 - -
103 - -
104 - -
105 - -
106 - -
107 - -
108 - -
109 - -
110 - -
111 - -
112 K119 20DB/LG CLUTCH PEDAL UPSTOP SWITCH SENSE
113 - -
114 - -
115 K14 14LB/BR FUEL INJECTOR NO. 4 CONTROL
116 K111 14DB/LB COMMON INJECTOR DRIVER
117 - -
118 K11 14WT/DB FUEL INJECTOR NO. 1 CONTROL
119 K12 14TN FUEL INJECTOR NO. 2 CONTROL
120 K13 14BR/LB FUEL INJECTOR NO. 3 CONTROL
121 - -
ENGINE COOLANT TEMP SENSOR (DIESEL) - BLUE 2 WAYCAV CIRCUIT FUNCTION
1 K2 20TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2 K900 20DB/DG SENSOR GROUND
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CONNECTOR PINOUTS

ENGINE OIL PRESSURE SENSOR (DIESEL) - BLACK 3 WAYCAV CIRCUIT FUNCTION
1 F855 20PK/YL SENSOR REFERENCE VOLTAGE A
2 G6 20VT/GY ENGINE OIL PRESSURE SENSOR SIGNAL
3 K936 20BR/YL ENGINE OIL PRESSURE SENSOR GROUND
ENGINE OIL TEMPERATURE SENSOR (DIESEL) - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 K89 20DB/WT ENGINE OIL TEMPERATURE SENSOR SIGNAL
2 K900 20DB/OR SENSOR GROUND
FUEL HEATER (DIESEL) - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 N1 16RD FUEL HEATER RELAY OUTPUT
2 Z201 18RD GROUND
FUEL INJECTOR NO. 1 (DIESEL) - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 K111 14DB/LB COMMON INJECTOR DRIVER
2 K11 14WT/DB FUEL INJECTOR NO. 1 CONTROL
FUEL INJECTOR NO. 2 (DIESEL) - BLACK 2 WAYCAV CIRCUIT FUNCTION
1 K111 14DB/LB COMMON INJECTOR DRIVER
2 K12 14TN FUEL INJECTOR NO. 2 CONTROL
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CONNECTOR PINOUTS