TEST ACTION APPLICABILITY
13 Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Starter Motor Relay from the Fuse/Relay Block.
Measure the resistance of the Starter Motor Relay Control circuit between the ECM
harness connector and the Fuse/Relay Block connector.
Measure the resistance of the Starter Motor Relay 12-volt Supply circuit between the
ECM harness connector and the Fuse/Relay Block connector.
Is the resistance below 10.0 ohms for each measurement?All
Ye s!Go To 14
No!Repair the Starter Motor Relay circuit(s) for an open.
Perform NO START VERIFICATION - VER-1.
14 Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Starter Motor Relay from the Fuse/Relay Block.
Measure the resistance between ground and the Starter Motor Relay Control circuit
at the Fuse/Relay Block connector.
Measure the resistance between ground and the Starter Motor Relay 12-volt Supply
circuit at the Fuse/Relay Block connector.
Is the resistance below 10.0 ohms for each measurement?All
Ye s!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform NO START VERIFICATION - VER-1.
No!Repair the Starter Motor Relay circuit(s) for a short to ground.
Perform NO START VERIFICATION - VER-1.
245
DRIVEABILITY - DIESEL
*ENGINE WILL NOT CRANK ÐContinued
NO START VERIFICATION - VER-1 APPLICABILITY
1. NOTE: IMPORTANT! If the Engine Control Module or Sentry Key Immobilizer
Module has been replaced, ensure the programming procedure for the module has
been performed in accordance with the Service Information.
2. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
3. Inspect the engine oil for contamination. If it is contaminated, change the oil and filter.
4. With the DRB, erase all diagnostic trouble codes (DTCs).
5. Turn the ignition off for at least 10 seconds.
6. Attempt to start the engine.
7. If the engine is unable to start, look for any Technical Service Bulletins (TSBs) that may
relate to this condition. Return to the Symptom List if necessary.
8. If the engine starts and continues to run, the repair is now complete.
Are any DTCs or symptoms remaining?All
Ye s!Repair is not complete, refer to appropriate symptom.
No!Repair is complete.
ROAD TEST VERIFICATION - VER-2 APPLICABILITY
1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If this verification procedure is being performed after a non-DTC test, perform steps 3 and
4. If not, proceed to step 5.
3. Check to see if the initial symptom still exists. If there are no trouble codes and the symptom
no longer exists, the repair was successful and testing is now complete.
4. If the initial or another symptom exists, the repair is not complete. Check all pertinent
Technical Service Bulletins (TSBs) and return to the Symptom List if necessary.
5. For previously read DTCs that have not been dealt with, return to the Symptom List and
follow the diagnostic path for that DTC; otherwise, continue.
6. If the Engine Control Module (ECM) has not been changed, perform steps 7 and 8, otherwise,
continue with step 9.
7. With the DRB IIIt, erase all diagnostic trouble codes (DTCs), then disconnect the DRB IIIt.
8. Turn the ignition off for at least 10 seconds.
9. If equipped with a Transfer Case Position Switch, perform step 10, otherwise, continue with
step 11.
10. With the ignition switch on, place the Transfer Case Shift Lever in each gear position,
stopping for 15 seconds in each position.
11. Ensure no DTCs remain by performing steps 12 through 15.
12. Road test the vehicle. For some of the road test, go at least 64 km/h (40 MPH). If this test
is for an A/C Relay Control Circuit, drive the vehicle for at least 5 minutes with the A/C on.
13. At some point, stop the vehicle and turn the engine off for at least 10 seconds, then restart
the engine and continue.
14. Upon completion of the road test, turn the engine off and check for DTCs with the DRB IIIt.
15. If the repaired DTC has set again, the repair is not complete. Check for any pertinent
Technical Service Bulletins (TSBs) and return to the Symptom List. If there are no DTCs, the
repair was successful and is now complete.
Are any DTCs or symptoms remaining?All
Ye s!Repair is not complete, refer to appropriate symptom.
No!Repair is complete.
247
VERIFICATION TESTS
Verification Tests ÐContinued
BOOST PRESSURE SERVOMOTOR (OBD)CAV CIRCUIT FUNCTION
1 16YL/BK FUSED ENGINE CONTROL RELAY OUTPUT
2 16YL/WT GROUND
3- -
4 16YL/DG BOOST PRESSURE SERVOMOTOR CONTROL
5- -
CAMSHAFT POSITION SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20BR/DG CAMSHAFT POSITION SENSOR GROUND
2 20YL/GY CAMSHAFT POSITION SENSOR SIGNAL
3 18RD/BL (EXCEPT OBD) CAMSHAFT POSITION SENSOR 12 VOLT SUPPLY
3 20RD/BL (OBD) CAMSHAFT POSITION SENSOR 5 VOLT SUPPLY
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CONNECTOR PINOUTS
CONTROLLER ANTILOCK BRAKECAV CIRCUIT FUNCTION
1 12BR GROUND
2 12RD FUSED B(+)
3- -
4- -
5 14BR GROUND
6 14RD FUSED B(+)
7- -
8 20BK/DG SENSOR SIGNAL
9 20YL/WT SENSOR SIGNAL
10 20YL/RD SENSOR SIGNAL
11 18BL/BK K-ABS/SHIFTER ASSEMBLY
12 18BK LEFT FRONT WHEEL SPEED SENSOR (+)
13 - -
14 20WT LEFT REAR WHEEL SPEED SENSOR (+)
15 18BR RIGHT FRONT WHEEL SPEED SENSOR (-)
16 18BK RIGHT FRONT WHEEL SPEED SENSOR (+)
17 - -
18 - -
19 - -
20 20WT BRAKE SWITCH OUTPUT
21 20BR GROUND
22 - -
23 18BK/RD FUSED OPTIONAL EQUIPMENT RELAY OUTPUT
24 20DG/WT CAN C BUS (+)
25 20BR SENSOR GROUND
26 20WT/GY BRAKE PRESSURE SENSOR SIGNAL
27 18BK/BL TCS SWITCH (ASR) SENSE
28 18BR LEFT FRONT WHEEL SPEED SENSOR (-)
29 20BR LEFT REAR WHEEL SPEED SENSOR (-)
30 20BR RIGHT REAR WHEEL SPEED SENSOR (-)
31 20YL RIGHT REAR WHEEL SPEED SENSOR (+)
32 18BK/RD BRAKE LAMP SWITCH OUTPUT
33 - -
34 - -
35 - -
36 - -
37 - -
38 - -
39 20RD/BL POWER INPUT
40 20DG CAN C BUS (-)
41 20DG/YL SENSOR SIGNAL
42 20WT/RD 5 VOLT SUPPLY
CRANKCASE HEATER - BLACKCAV CIRCUIT FUNCTION
1 18BR (EXCEPT OBD) GROUND
1 18BK/RD (OBD) CRANKCASE HEATER SIGNAL
2 16BK/RD (EXCEPT OBD) FUSED ENGINE CONTROL RELAY OUTPUT
2 18BK/BR (OBD) CRANKCASE HEATER GROUND
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CONNECTOR PINOUTS
CRANKSHAFT POSITION SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20DG (EXCEPT OBD) CRANKSHAFT POSITION SENSOR SIGNAL NO. 2
1 20DG/WT (OBD) CRANKSHAFT POSITION SENSOR SIGNAL NO. 1
2 20DG/WT (EXCEPT OBD) CRANKSHAFT POSITION SENSOR SIGNAL NO. 1
2 20DG (OBD) CRANKSHAFT POSITION SENSOR SIGNAL NO. 2
DATA LINK CONNECTOR - BLACKCAV CIRCUIT FUNCTION
1 20WT/DG K-SKREEM
2- -
3 20DG/YL ENGINE RPM
4 20BR GROUND
5 20BR GROUND
6- -
7 20BL/YL K-ECM
8 20BK/BL/DG FUSED IGNITION SWITCH OUTPUT (RUN-START)
9 20BL/BK K-ABS/SHIFTER ASSEMBLY
10 - -
11 20BL K-TCM/RADIO
12 20GY/DG/RD K-CTM/SSM
13 20BK/RD K-ACM
14 - -
15 20WT/GY K-IC/ATC/HBM/CHM
16 20RD/YL FUSED B(+)
EGR VALVE - BLACKCAV CIRCUIT FUNCTION
1 20RD/YL (EXCEPT OBD) EGR VALVE CONTROL
1 20DG/WT (OBD) EGR VALVE CONTROL
2 16BK/GY (EXCEPT OBD) FUSED ENGINE CONTROL RELAY OUTPUT
2 16BK/DG (OBD) FUSED ENGINE CONTROL RELAY OUTPUT
3 18BR/BK (EXCEPT OBD) SENSOR GROUND
3 20BR/DG (OBD) SENSOR GROUND
4- -
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CONNECTOR PINOUTS
ENGINE CONTROL MODULE C2 (OBD)CAV CIRCUIT FUNCTION
1 16BK/RD FUSED ENGINE CONTROL RELAY OUTPUT
2 14BR GROUND
3 14BK/BL FUSED ENGINE CONTROL RELAY OUTPUT
4 14BR GROUND
5 14BK/BL FUSED ENGINE CONTROL RELAY OUTPUT
6 14BR GROUND
7 18RD S/C SWITCH 12 VOLT SUPPLY
8 18BR/WT HIGH IDLE ON SIGNAL
10 18WT/RD BOOST PRESSURE SENSOR 5 VOLT SUPPLY
11 18WT/DG BOOST PRESSURE SENSOR SIGNAL
12 18BR/WT SENSOR GROUND
13 18GY/DG ACCEL PEDAL POSITION SENSOR SIGNAL NO. 2
14 18BR/GY ACCEL PEDAL POSITION SENSOR GROUND NO. 2
17 18BR/DG KICKDOWN SWITCH SIGNAL
18 20DG/YL ENGINE RPM
19 18BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
24 18BL/RD ACCEL PEDAL POSITION SENSOR 5 VOLT SUPPLY
25 18BL/DG ACCEL PEDAL POSITION SENSOR SIGNAL NO. 1
26 18BR/BL ACCEL PEDAL POSITION SENSOR GROUND NO. 1
28 18BR/DG INTAKE AIR TEMPERATURE SENSOR GROUND
31 20BL/YL K-ECM
32 20DG ENHANCED ACCIDENT REPORT DRIVER
36 18VT IGNITION SWITCH OUTPUT (START)
37 18DG ACCEL/SET SIGNAL
38 18BK VERIFICATION SIGNAL
42 18DG/WT INTAKE AIR TEMPERATURE SENSOR SIGNAL
43 18BK/RD GLOW PLUG MODULE CONTROL
44 18YL/BL ENGINE CONTROL RELAY CONTROL
50 18YL DECEL/SET SIGNAL
51 18GY OFF SIGNAL
52 18BL RESUME SIGNAL
53 20DG/WT CAN C BUS (+)
54 20DG CAN C BUS (-)
55 18BR/RD FUEL PUMP RELAY CONTROL
58 18VT/DG STARTER MOTOR RELAY CONTROL
ENGINE COOLANT TEMPERATURE SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20BR/WT ENGINE COOLANT TEMPERATURE SENSOR GROUND
2 20DG/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
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CONNECTOR PINOUTS
FUEL INJECTOR NO. 4 - BLACKCAV CIRCUIT FUNCTION
1 14BK/YL (EXCEPT OBD) FUEL INJECTOR NO. 4 CONTROL
1 16BK/VT (OBD) FUEL INJECTOR NO. 4 LOW-SIDE CONTROL
2 14BK (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 1
2 16BL/WT (OBD) FUEL INJECTOR NO. 4 HIGH-SIDE CONTROL
FUEL INJECTOR NO. 5 - BLACKCAV CIRCUIT FUNCTION
1 14BK/DG (EXCEPT OBD) FUEL INJECTOR NO. 5 CONTROL
1 16BK/YL (OBD) FUEL INJECTOR NO. 5 LOW-SIDE CONTROL
2 14BL (EXCEPT OBD) COMMON INJECTOR DRIVER NO. 2
2 16BK/WT (OBD) FUEL INJECTOR NO. 5 HIGH-SIDE CONTROL
FUEL PRESSURE SENSOR - BLACKCAV CIRCUIT FUNCTION
1 20BR/GY FUEL PRESSURE SENSOR GROUND
2 20DG/VT FUEL PRESSURE SENSOR SIGNAL
3 20RD/DG FUEL PRESSURE SENSOR 5 VOLT SUPPLY
FUEL PRESSURE SOLENOIDCAV CIRCUIT FUNCTION
1 20BK/WT FUEL PRESSURE SOLENOID CONTROL
2 20RD/WT FUEL PRESSURE SOLENOID 12 VOLT SUPPLY
FUEL PUMP (OBD)CAV CIRCUIT FUNCTION
1 14BK FUEL PUMP RELAY OUTPUT
2 14BR GROUND
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CONNECTOR PINOUTS
FUEL PUMP RELAY (OBD)CAV CIRCUIT FUNCTION
30 14RD/BK FUSED B(+)
85 18BR/RD FUEL PUMP RELAY CONTROL
86 18BK/RD FUSED ENGINE CONTROL RELAY OUTPUT
87 14BK FUEL PUMP RELAY OUTPUT
87A - -
FUEL QUANTITY CONTROL VALVE (OBD)CAV CIRCUIT FUNCTION
1 20BK/WT FUEL QUANTITY SOLENOID CONTROL
2 18RD/BK FUEL QUANTITY SOLENOID 12 VOLT SUPPLY
FUEL TEMPERATURE SENSORCAV CIRCUIT FUNCTION
1 18DG/BK FUEL TEMPERATURE SENSOR GROUND
2 18BL/GY FUEL TEMPERATURE SENSOR SIGNAL
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CONNECTOR PINOUTS
