Driveability - Gas - Non-Dtc Based Diagnostics: Other Jeep Compass I рестайлинг

CHECKING THE ENGINE MECHANICAL SYSTEM

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

CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS

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

Scheme 504

Scheme 505

Scheme 506

1. EVAPORATIVE SYSTEM INSPECTION Turn the ignition off. Raise the vehicle as necessary in accordance with the Service Information. Visually and physically inspect the entire Evaporative Emission System for any of the following conditions: Holes or cracks Loose seal points Evidence of damaged components Incorrect routing of hoses or tubes Loose or missing fuel filler cap Improper installation of the fuel filler cap Damaged locking tabs on cap and/or fill tube Damaged seal points on cap and/or fill tube Fuel cap gasket seal missing or damaged Were any problems found? Yes Repair as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 2 .
2. VERIFY EVAPORATIVE EMISSION LEAK WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources away from the test area to prevent the ignition of explosive gases. Keep the test area well ventilated. Failure to do so may result in possible serious or fatal injury. Turn the ignition off. To continue testing, you will need Evaporative Emission Leak Detector (EELD) (special tool #8404B, Kit, EELD And Accessory). NOTE: The fuel tank should have between 20% and 80% of fuel tank capacity to properly test the Evap system. Connect the red power lead of EELD to the battery positive terminal and the black ground lead to battery negative terminal. Block the vent hose of the Evap Canister. Connect shop air to the EELD. Set the smoke/air control switch to AIR. Insert the tester's AIR supply tip (clear hose) into the.040 orifice on the tester's control panel. Press the remote smoke/air start button. Position the red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The EELD flow meter is now calibrated in liters per minute. Install the service port adapter (special tool #8404-14, Adapter, Evaporative Service Port) on the vehicle's service port (if equipped) or install the (special tool #8404-ADP, Smoke Machine Adapters) into the filter line. Connect the AIR supply hose from the EELD to the service port (if equipped) or to the (special tool #8404-ADP, Smoke Machine Adapters) adapter. Press the remote button to activate AIR flow. NOTE: Larger volume fuel tanks, lower fuel levels, or vehicles equipped with a Flow Management Valve may indicate high flow and will require four to five minutes to fill. Compare the flow meter indicator ball reading to the red flag. ABOVE the red flag indicates a leak present. BELOW the red flag indicates a sealed system. Is the indicator ball above the red flag? Yes Go to 3 . No Refer to the Freeze Frame data, if applicable. If the Freeze Frame data indicates that the vehicle was in motion when the DTC was set, verify that all hoses are connected properly. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
3. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough inspection of the Evap system hoses, tubes, and connections may save time in diagnosis. Look for physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. To continue testing, you will need Evaporative Emissions Leak Detector (EELD) (special tool #8404B, Kit, EELD And Accessory). Remove the AIR supply hose from the service port (if equipped) or from the adapter (special tool #8404-ADP, Smoke Machine Adapters). Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the adapter (special tool #8404-ADP, Smoke Machine Adapters). Set the smoke/air control switch to SMOKE. NOTE: The flow meter indicator ball will not move in the smoke mode. Press the remote smoke/air start button. NOTE: Make sure that smoke has filled the Evap system by continuing to press the remote smoke/air start button, remove the vehicle fuel cap, and wait for the smoke to exit. Once smoke is detected, reinstall the fuel cap. NOTE: For the best results, introduce smoke into the system for an additional 60 seconds and continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the white light (special tool #8404-CLL, Light, White) to follow the Evap system path, and look for the source of the leak as indicated by exiting smoke. If a leak is concealed from view (at the top of the fuel tank, for example), release the remote smoke/air start button, and use the ultraviolet (UV) black light (special tool #8404-UVL, Light, UV) and the UV goggles (special tool #8404-20, Goggles, Yellow) to look for residual traces of dye that is left behind by the smoke. The exiting smoke deposits a residual fluid that is either bright green or bright yellow when viewed with a UV light. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 4 .
4. CHECKING THE GAS CAP AND FUEL FILLER TUBE Thoroughly check the gas cap and filler tube area for leaks. Was a leak found at the gas cap or filler tube? Yes Go to 5 . No Go to 6 .
5. GAS CAP OR FUEL FILLER TUBE Remove the SMOKE supply tip (black hose) from the service port (if equipped) or from the (special tool #8404-ADP, Smoke Machine Adapters) adapter. Install leak check adapter (special tool #8382, Adapter, Leak Check) (1/4 turn cap) or fuel tank adapter (special tool #6922, Adapter, Fuel Tank) (screw cap) and leak check adapter (special tool #8399, Adapter, Leak Check) (secondary seal depressor) and repeat test 4. Was a leak found at the gas cap adapter? Yes Replace the fuel filler tube assembly. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Replace the gas cap. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
6. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 1 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 1 of the evaporative system for leaks: 1 Fuel Cap 2 Recirculation Check Valve 3 Vapor Recirculation Line 4 Signal Vapor Line for FVM 5 Flow Management Valve 6 Fuel Tank to Canister Vapor Line 7 Fuel Tank Vent (Check Valve) 8 Vapor Line to Canister 9 Flow Control Orifice 10 Control Valve 11 Liquid Trap 12 Fuel Tank 13 Check Valve 14 Fuel Fill Tube to Tank connector 15 Fuel Fill Tube Damaged or disconnected components Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 7 .
7. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 2 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 2 of the evaporative system for leaks: 1 Filter 2 ESIM Switch 3 Canister Vent Line 4 Evap Canister 5 Chassis Purge Valve 6 Fuel Tank to Canister Vapor Line connection 7 Evap Purge connection Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 8 .
8. CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 3 NOTE: For testing purposes, the Evap System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 3 of the evaporative system for leaks: 1 Evap Purge Vacuum Line 2 Connection to Chassis Line 3 Connection to Canister 4 Chassis Purge Line 5 Evap Purge Vacuum Line 6 Connection to Evap Purge Harness 7 Chassis Evap Purge Line connection to Engine Vacuum 8 Evap Purge Valve 9 Service Port Were any problems found? Yes Repair or replace the leaking component as necessary. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Test complete.

CHECKING THE FUEL DELIVERY SYSTEM

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

CHECKING THE TEMPERATURE SENSORS

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ENGINE CRANKS BUT DOES NOT START

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Possible Causes

FUEL PRESSURE LEAK DOWN

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

Scheme 507

1. CHECK FUEL DELIVERY SYSTEM FOR LEAKS AND DAMAGE WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Visually and physically inspect the fuel delivery system for external leaks and damage. Is the system leaking or damaged? Yes Repair / replace as necessary. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 2 .
2. INSTALL APPROPRIATE FUEL LINE ADAPTERS / FITTING FROM GAS AND DIESEL FUEL PRESSURE/DECAY TESTER 8978A Turn the ignition off. WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Disconnect the frame rail fuel supply line connector between the fuel supply line and the fuel rail. Install the appropriate Fuel Line Adapters / Fitting from Gas and Diesel Fuel Pressure/Decay Tester (special tool #8978A, Decay Tool, Fuel). Go to 3 .
3. INSTALL FUEL PRESSURE GAUGE ASSEMBLY WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Connect Gas and Diesel Fuel Pressure/Decay Tester (special tool #8978A, Decay Tool, Fuel), Fuel Inlet Hose (1) and Fuel Outlet Hose (2) to the Fuel Line Adapters / Fitting. Connect Drain Extension Hose 535680 (3) to the Fuel Pressure Gauge Assembly Drain Hose (5). Connect the Reservoir Assembly 534960 (4) to the Drain Extension Hose 535680 (3). WARNING: To reduce the risk of fire and serious possible serious or fatal injury, place Reservoir Assembly 534960 (4) on the floor and out of the way so that it is not a trip hazard. Go to 4 .
4. CHECK FUEL PRESSURE WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Perform the following procedure to purge air from the system: Open the Fuel System Isolation Valve (1). Close the Flow Test Valve (2). Ignition on, engine not running. With the scan tool, actuate the fuel pump. Open the Flow Test Valve (1) for 10 seconds, then close the Valve. CAUTION: Stop All Actuations. Turn the ignition off. Disconnect, empty and then reconnect the Reservoir Assembly. Turn the ignition on, wait five seconds, turn the ignition off and then wait 1 minute before proceeding. Read the Fuel Pressure Gauge (3) and record the reading. The fuel pressure specification is 407 KPa +/- 34 KPa (59 psi +/- 5 psi). Is the fuel pressure within specifications? Yes Go to 5 . No Perform the Checking The Fuel Delivery System diagnostic procedure as directed.
5. CHECK FUEL DELIVERY SYSTEM FOR LEAK DOWN WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury. Close the Fuel System Isolation Valve (1) and then wait five minutes before proceeding. Read the Fuel Inlet (2) and Fuel Outlet (3) Pressure Gauges. The pressure should not drop more than 10 psi on either gauge. Does the fuel pressure drop more than 10 psi? Yes - On Fuel Inlet Gauge (1) Replace the appropriate fuel pump module as indicated in the table below. Vehicle Check Valve Location LC Auxiliary fuel pump module (right-side of fuel tank) LX Auxiliary fuel pump module (right-side of fuel tank) JC Primary fuel pump module (left-side of fuel tank) JS Primary fuel pump module (left-side of fuel tank) MK Primary fuel pump module (left-side of fuel tank) PM Primary fuel pump module (left-side of fuel tank) NOTE: The check valve allows residual fuel pressure to remain in the line and not de-pressurize into the tank when the fuel pump is off. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . Yes - On Fuel Outlet Gauge (2) Replace the leaking fuel injector(s). Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No If directed here by another test, return to that test. Otherwise, test complete.

HARD START FUEL SYSTEM

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

NO CRANK CONDITION

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Scheme 508

1. MECHANICAL CONDITION NOTE: An external Radio-Frequency Identification (RFID) key (and/or pass/radio key), such as one used to gain access to a 24 hour gym, can cause this DTC to set and create a no start condition. Inspect the customer's key chain for any type of RFID key. If one is not found, question the customer to see if a spare key chain has this RFID key on it or if it was removed from the original key chain before the vehicle was released for service. If a RFID key is present, remove the ignition key from the vehicle and remove the RFID key from the key chain. For GPEC equipped vehicles, disconnect the battery and wait a minimum of 5 minutes, reconnect and attempt to start the vehicle. For NGC equipped vehicles, turn the ignition on a minimum for one hour, and then attempt to start the vehicle. If the vehicle does not start, continue with the diagnostic test. NOTE: Verify the key being used is the proper key for this vehicle and a blank key. If the key being programmed is not blank (one that has been programmed for another vehicle) this fault will set. NOTE: Install a known good Starter relay and see if the vehicle will start. NOTE: Verify the battery is fully charged and capable of passing a load test before continuing. WARNING: Make sure the battery is disconnected, then wait two minutes before proceeding. Failure to do so may result in possible serious or fatal injury. Turn the engine over by hand to make sure the engine is not seized. Is the engine able to turn over? Yes Go to 2 . No Repair the mechanical condition preventing the starter motor from cranking. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
2. PARK/NEUTRAL POSITION Turn the ignition on. With a scan tool, monitor the Park Neutral Position. Move the transmission selector through the different gear selections while monitoring the scan tool. Does the scan tool display the transmission positions properly when in Park and Neutral? Yes Go to 3 . No Adjust the shift cable if applicable. Perform the diagnostic procedure for P0850-Park Neutral Switch Performance as if it is active. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
3. TRANSMISSION RANGE SENSOR Turn the ignition off. Disconnect the TRS harness connectors. Move the Gear selector through all gear positions, from Park to 1st and back. While moving the gear selector through each gear, measure the resistance between ground and the TRS (T41) Sense (P/N Position Switch Sense) circuit at the TRS connector. NOTE: The circuit is grounded in Park and Neutral and open in the other positions. Did the resistance change from above 100 kOhms (open) to below 10.0 Ohms (grounded) ? Yes Go to 4 . No Replace the Transmission Range Sensor. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
4. REMOTE START ANTENNA NOTE: If the vehicle is not equipped with Remote Start, proceed to the next test step. Reconnect the battery. Turn the ignition on. Using the scan tool, erase DTCs. Turn the ignition off. Disconnect the Remote Start Antenna from the Wireless Control Module (WCM). Using the ignition key, start the vehicle. Did the vehicle start? Yes Replace the Remote Start Antenna in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-462532-S10454917552012040500000) . No Go to 5 .
5. PCM FUSED B+ CIRCUITS Turn the ignition off. Disconnect the PCM C1 harness connector. Using a 12-volt test light connected to ground, probe the Fused B+ circuit the PCM C1 harness connector. Does the test light illuminate brightly? Yes Go to 6 . No Repair the open or short to ground in the PCM Fused B+ circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
6. EXCESSIVE RESISTANCE IN THE BATTERY CIRCUIT Turn the ignition off. Check the Battery Cables for excessive resistance using the service information procedure. Did either Battery Cable have a voltage drop greater than 0.2 of a volt? Yes Repair the excessive resistance in the Battery circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 7 .
7. STARTER CAUTION: The Parking Brake must be on and the Transmission must be in park for a vehicle equipped with an automatic transmission. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury. Turn ignition off. Disconnect the Starter Solenoid harness connector. NOTE: The Stater Solenoid harness connector must remain disconnected at this time. Have an assistant turn the ignition key to the CRANK position. Using a 12-volt test light connected ground, probe the (T750) Stater Relay Output circuit in the Starter Solenoid harness connector while the ignition key is in the CRANK position. Does the test light illuminate brightly? Yes Replace the Starter in accordance with the service information. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 8 .
8. (T752) STARTER OVERRIDE CIRCUIT CHECK NOTE: Inspect fuses related to the Starter. Turn the ignition off. Disconnect the TIPM C2 harness connector. Disconnect the PCM C1 harness connector. Check the T752 Starter Relay Control circuit for and open or short to ground. Were any problems found in the T752 Starter Override circuit between the TIPM and PCM? Yes Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 9 .
9. (T750) STARTER CONTROL OUTPUT CIRCUIT OPEN Disconnect the Starter Solenoid harness connector. Measure the resistance of the (T750) Starter Control Output circuit between the Starter Solenoid harness connector and the TIPM C2 harness connector. Is the resistance below 5.0 Ohms? Yes Go to 10 . No Repair the open in the (T750) Starter Control Output circuit. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
10. (T750) STARTER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (T750) Starter Control Output circuit in the Starter Solenoid harness connector. Is the resistance below 100 Ohms? Yes Repair the short to ground in the (T750) Starter Control Output circuit. Perform the PCM VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Go to 11 .
11. TOTALLY INTEGRATED POWER MODULE NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Using the wiring diagrams as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. Were any problems found? Yes Repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-462532-S10454917552012040500000) . No Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «Standard Procedure»(ref-462532-S10454917552012040500000) .

NO RESPONSE WITH A NO START CONDITION

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

Scheme 509

Scheme 510

Scheme 511

Scheme 512

Scheme 513

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Scheme 515

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Scheme 517

Scheme 518

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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) . 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-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) . 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-462523-S03338033562012040500000) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to «MODULE, Powertrain Control , Removal»(ref-462466-S42871077392012040500000) . Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .
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-462523-S03338033562012040500000) .
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-462466-S42871077392012040500000) . Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) . No Repair the (D64) CAN C Bus (-) circuit for an open. Perform the POWERTRAIN VERIFICATION TEST. Refer to «POWERTRAIN VERIFICATION TEST»(ref-462523-S03338033562012040500000) .