Starting - Non-Dtc Based Diagnostics: Other Jeep Compass I facelift 2

ENGINE CRANKS BUT DOES NOT START

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

POSSIBLE CAUSES

INTERMITTENT NO START CONDITION

For a complete wiring diagram refer to appropriate SYSTEM WIRING DIAGRAMS article

NO RESPONSE WITH A NO START CONDITION

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

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1. (A931) FUSED B+ CIRCUIT (PCM) NOTE: The scan tool and cable must be operating properly for the results of this test to be valid. NOTE: Make sure the ignition switch was on while trying to communicate with the PCM. Turn the ignition off. Disconnect the C1 PCM harness connectors. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Using a 12-volt test light connected to ground, probe the (A931) Fused B+ circuit in the PCM C1 harness connector. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 2 No Repair the open or short to ground in the (A931) Fused B+ circuit. Inspect and replace fuses as necessary. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
2. (F202) IGNITION SWITCH OUTPUT (RUN-START) CIRCUITS (PCM) Turn the ignition on. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Using a 12-volt test light connected to ground, probe the (F202) Fused Ignition Switch Output circuit in the PCM C1 harness connector. Turn the ignition to run. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 3 No Repair the (F202) Ignition Switch Output circuits. Inspect and replace fuses as necessary. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
3. (Z932) GROUND CIRCUITS (PCM) Turn the ignition off. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Using a 12-volt test light connected to battery voltage, probe both the (Z932) PCM ground circuits NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly at both terminals? Yes Go To 4 No Repair the Ground circuit(s). Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
4. (A14) FUSED B+ CIRCUIT (ASD RELAY) Turn the ignition off. Remove the ASD/Main Relay. Using a 12-volt test light connected to ground, probe the (A14) Fused B+ circuit at the ASD Relay terminal. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the Test. light illuminate brightly? Yes Go To 5 No Repair the (A14) Fused B+ circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
5. (A935) FUSED B+ CIRCUIT (ASD RELAY) Using a 12-volt test light connected to ground, probe the (A935) Fused B+ circuit at the ASD/Main Relay terminal. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 6 No Repair the (A935) Fused B+ circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
6. (F342) ASD RELAY OUTPUT CIRCUITS Turn the ignition on. Using a jumper wire, jumper across the ASD Relay from (K542) ASD Relay Output circuit and the (A14) Fused B+ circuit. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. With a 12-volt test light connected to ground, probe the (F342) ASD Relay Output circuits in the PCM C1 harness connector. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly at both terminals? Yes Go To 8 No Go To 7
7. (K542) ASD RELAY OUTPUT CIRCUIT Jumper wire still installed. Disconnect the C8 TIPM harness connector. Using a 12-volt test light connected to ground, probe the (K542) ASD Relay Output circuit in the TIPM harness connector. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Repair the (F342) ASD Relay Output circuit(s). Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Repair the (K542) ASD Relay Output circuit between the TIPM and the ASD Relay. Inspect the related fuses. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
8. ASD RELAY OUTPUT Turn the ignition off. Remove one end of the jumper wire. Connect the PCM harness connector. Turn the ignition on. Return the jumper wire across the ASD Relay. Using a scan tool, attempt to communication with the PCM. Were you able to communication with the PCM? Yes Go To 9 No Go To 11
9. ASD RELAY NOTE: To continue the following test, leave the jumper wire in place with the ignition on. Using the scan tool, actuate the ASD/Main Relay. Using a 12-volt test light connected to battery voltage, probe the (K51) ASD Relay Control circuit in the ASD/Main Relay connector. Does the Test. light illuminate and flash on and off? Yes Replace the ASD/Main Relay. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Go To 10
10. (K51) ASD RELAY CONTROL CIRCUIT Turn the ignition off. Disconnect the C1 PCM harness connector. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Measure the resistance of the (K51) ASD Relay Control circuit between the PCM C1 harness connector and the ASD/Main Relay connector. Is the resistance below 5.0 Ohms? Yes Repair the open in the (K51) ASD Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to «MODULE, POWERTRAIN CONTROL, REMOVAL»(ref-612709-S25615720232014043000000) . Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
11. (D65) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C3 harness connector. NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C3 harness connector and the PCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Go To 12 No Repair the (D65) CAN C Bus (+) circuit for an open. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .
12. (D64) CAN C BUS (-) CIRCUIT OPEN NOTE: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact. Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C3 harness connector and the PCM C1 harness connector. Is the resistance below 5.0 Ohms? Yes Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to «MODULE, POWERTRAIN CONTROL, REMOVAL»(ref-612709-S25615720232014043000000) . Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) . No Repair the (D64) CAN C Bus (-) circuit for an open. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-612772-S14483504372014043000000) .

NO CRANK (TIPM - WCM EQUIPPED)

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

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REMOTE START INOPERATIVE (TIPM - WCM EQUIPPED)

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .