Starting

NO CRANK (TIPM - WCM EQUIPPED)
REMOTE START INOPERATIVE (TIPM - WCM EQUIPPED)

NO CRANK (TIPM - WCM EQUIPPED)

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

TIPM and WCM Operation

The TIPM and WCM require two signals to verify the ignition is in the run or start position. The WCM receives a signal from the Ignition Switch on the G20 Ignition Switch Sense circuit which is a muxed voltage . At the same time the Ignition Switch supplies a 12 volt signal on the F20 circuit to the WCM and TIPM. This is a second signal to the WCM and one of the signals to the TIPM. The Ignition Switch status can be monitored in both the WCM and TIPM data display screens as the Ignition Run/Start under the “Sensor” value. The run or start position voltage on the F20 circuit should be at or close to battery voltage.

Once the WCM confirms the signals received on the F20 and G20 circuits, the WCM busses the Ignition Run/Start status to the TIPM. The TIPM monitors the CAN C bussed input information as the second signal/verification on the Ignition Run/Start status. The bussed messages can be monitored in both the WCM and TIPM data display screens.

The F20 and the bussed message information received by the TIPM regarding the Ignition Run/Start status must agree to enable starting. Once the vehicle is in operation, the loss of only one ignition signal will not cause the vehicle to turn off as long as the other feed still indicates a "run status".

The G20 circuit approximate key position voltages and status can be viewed in the data display screen of the WCM and compared to the values listed below:

Open Circuit = 5v
Key Out = 4.6v
Key In /Lock = 4.04v
Accessory = 3.2v
Unlock = 2.2v
Run = 1.12v
Start = 0.41v
Short/Grd = 0.00v

Diagnostic Aids

NOTE: The No Crank Diagnostic serves as an aid in diagnosing the concern and is intended to be used as a general guide, since each condition can be different.

The No Crank Diagnostic Test assumes all of the following to be true:

The condition is currently present.
The TCM, PCM, WCM, and TIPM are at the latest calibration (part number) levels.
There are no active DTCs.
There are no applicable Recalls.
There are no applicable TSBs
There are no PCM inhibits (i.e. RPM, Trans Range, Clutch)
The Keys/FOBs complete function and operation is correct.
All battery cables and connections are clean and tight.
There are no open fuses.
The battery is fully charged and can pass a load test from the GR8 tester.
The engine rotates freely.
Any aftermarket equipment/wiring that has been added was installed and is operating correctly

Starter Relay Operation

In a no crank condition the Starter Relay can be missing power at pin 85, feed at pin 30, controlled ground at pin 86 or output at pin 87. Further explanation of how a relay operates is listed below.

Pin 85 receives power from the TIPM once the parameters for the Ignition Switch position and status, and all inhibit monitors (i.e. clutch switch, rpm, etc.) are satisfied.
Pin 30 is a constant B+ feed.
Pin 86 is a controlled ground by a module (i.e. PCM or BCM). Once power is sent from the TIPM to the pin 85 of the relay it passes through a coil and leaves the relay through pin 86 to control module.
Pin 87 is an output circuit to the Starter solenoid. Once the circuit on pin 86 is grounded by the control module, the coil winding in the relay magnetically pulls the internal switch closed. When the internal switch is closed the power at pin 30 is sent to pin 87 of the relay.

Diagnostic Test

1. STARTER RELAY CHECK

1.	When attempting to start the vehicle, listen and if needed feel for a click at the starter relay.

NOTE:
Some starter relays are internal to a module and may not be accessible, making it more difficult to hear, or feel the clicking response. It is possible for a poor ground or Trans Range Sensor position could be lost causing the starter to click once.

Did you hear an audible click at the relay or starter?

Yes

Go To 9

Go To 2

2. STARTER RELAY INPUT CHECK

1.	Using a 12 volt test light/DVOM to check for power at/going to pin 85 of the starter relay.

Is there Power/12 volts at pin 85?

Yes

Go To 8

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3. WCM OPERATION

1.	Using the scan tool, confirm the ignition switch status changes in the WCM under the data display screen, when using the key in the ignition.

Does the ignition switch status on the data screen match the physical position of the key in the Ignition?

Yes

Go To 5

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4. REMOTE START ANTENNA

NOTE:
If the vehicle is not equipped with Remote Start, proceed to the next test step.

1.	Turn the ignition off.

2.	Disconnect the Remote Start Antenna from the WCM.

3.	Using one Key and sitting in the driver’s seat, attempt to start the vehicle.

Did the vehicle start?

Yes

Replace the Remote Start Antenna in accordance with the Service Information.
Perform the BODY VERIFICATION TEST.

Go To 5

5. TIPM IGNITION STATUS

1.	Using the scan tool, confirm the ignition switch status changes in the TIPM under the data display screen for the “Bussed Input” and “Sensor” values.

NOTE:
The change of status in the TIPM for the “Sensor” value validates the voltage activity (with very low amperage) of the F20 circuit.

In the TIPM, do both values for the ignition switch status match; and do they match those in the WCM?

Yes

Go To 6

If the status of the Ignition Switch position is not changing under the “Sensor” value, check the F20 circuit at the WCM and TIPM for battery voltage with a DVOM (not a test light). The Ignition switch sends the voltage to the WCM and TIPM simultaneously on the F20 circuit.
If only one module (WCM or TIPM) receives Battery voltage on the F20 circuit, repair or replace the circuit for a short/open/high resistance in accordance with Service Information.
If there is NO Battery voltage at the WCM and TIPM on the F20 circuit, then check for voltage on the F20 circuit at the Ignition Switch. If there is voltage on the F20 circuit at the Ignition Switch repair or replace the circuit for a short/open/high resistance. If there is no voltage on the F20 circuit when checked at the ignition switch, verify the power and ground for the Ignition Switch. If no problem found replace the switch and verify the repair.
In the data display screen of the WCM, if the status of the Ignition Switch Sense voltage was not changing further diagnosis is needed on the G20 Ignition Switch Sense circuit for a short/open/high resistance in accordance with Service Information.
In the data display screen of the TIPM, if the status of the Ignition Switch Sense voltage was not changing under the “Bussed Input” value, further diagnosis is needed on the communication for the WCM, Bus circuits, Connections and the TIPM for the cause.

6. PCM IGNITION, TRANS RANGE/CLUTCH SWITCH STATUS VERIFICATION

1.	Using the scan tool confirm there are no inhibits that have been triggered in the PCM (i.e. Ignition Switch, Trans Range or Clutch Switch) and any switch inputs (filtered states) relating to the starting system function and operate correctly under the data display screen.

Does the PCM show any inhibits (not DTCs) for starting (not remote starting)?

Yes

Correct the inhibit reason listed.
If no problem can be found then verify all power, ground and bus circuits to the PCM and replace in accordance with Service Information. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Powertrain Control/Removal) .

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7. TIPM TO STARTER RELAY CHECK

1.	At this time if all the correct inputs for the ignition switch status are correct in the WCM, TIPM and PCM, verify both powers (pin 30 and 85) to the Starter Relay in the crank position.

Are both power supplies present at the relay when the ignition is in the crank position?

Yes

Go To 8

If, there is no power to pin 30 or 85, no DTCs, TSBs, Recalls, or Inhibits replace the TIPM in accordance with Service Information. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Totally Integrated Power (TIPM)/Removal).

8. STARTER RELAY CONTROL CIRCUIT CHECK

1.	Using a test light/DVOM determine if the Starter Control circuit at pin 86 of the relay is missing (at the relay if equipped with a removable relay or wiring to the internal relay) when turning the ignition to the crank position.

Was the Starter Control circuit for pin 86 being grounded when the ignition was in the crank position?

Yes

Go To 10

Verify the Starter Relay Control circuit from pin 86, that there are no shorts, opens or high resistance on the wiring going from the Starter Relay in the TIPM to the PCM, Starter Solenoid and Starter.
Verify the cables do not have excessive resistance by performing a voltage drop on the battery cables.

9. STARTER RELAY OUTPUT CIRCUIT CHECK

NOTE:
At this point in the test, when the key is in the crank position power has been verified at Pin 30 & 85, along with the control circuit being grounded for pin 86.

1.	Remove Starter Relay Output circuit connector from the Starter solenoid.

2.	Reinstall/Connect the starter relay into the TIPM.

3.	Using a test light/DVOM and ignition in the crank position check for power at pin 87 (If equipped with a removable relay or wiring to the internal relay) of the relay and at the connection to the starter.

Was there power at pin 87 for the output circuit?

Yes

Go To 10

If power is missing to pin 30 of the starter relay the TIPM is suspect. Verify all power, ground, communication circuits and connections to the TIPM before replacing in accordance with service information.
If power is missing at pin 87 of the starter relay and the relay is replaceable, change out the relay and recheck the concern. If a known good relay causes no change, check the Starter Output circuit from pin 87 of the relay to the starter for an open, short, excessive resistance, or poor connections to the solenoid or starter.
Verify and Inspect the Starter to ensure it is free of corrosion, oil, and there is no damage, or binding conditions.
Verify that all wiring, cables and connections are clean and tight.

10. STARTER RELAY OUTPUT CIRCUIT CHECK

1.	Load test the Starter Relay output circuit going from the TIPM to the Starter.

Does the starter relay output circuit pass the load test?

Yes

Verify that all connections are clean, tight and there is no damage to starter when fully inspected. If no problem found then replace the Starter in accordance with Service Inforrmation.(Refer to 08 - Electrical/Starting/STARTER/Removal) .

Adjust the shift cable in accordance with the Service Information. Perform the POWERTRAIN VERIFICATION TEST.

REMOTE START INOPERATIVE (TIPM - WCM EQUIPPED)

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The customer may notice that the signal range of the Remote Keyless Entry (RKE) system is reduced. This condition may be due to the RKE antenna where the RKE key fob may need to be closer than 3 meters (10 feet) before the functions available on the key fob will operate. The diagnostic flow chart is provided as a diagnostic aid for the dealer technician.

It is necessary to confirm the correct sales code(s) are present in the Standard and Optional Equipment sections of DealerCONNECT to determine if a factory or a Mopar Accessory Remote Start kit was installed. If the vehicle has a Mopar Accessory Remote Start kit, verify that at least 20 minutes has elapsed since the sales codes were added to DealerCONNECT. Once it has been confirmed that the proper sales codes have been added and the allotted time has passed, verify the vehicle has been configured properly using the scan tool. Also make sure that the system shows as enabled in the TIPM, and that the temporary remote start override is set to disabled.

For any further assistance on diagnosing the installed Mopar Accessory kit contact the Mopar Accessories group at 800-84-MOPAR (66787).

Diagnostic Test

1. REMOTE START FUNCTION

NOTE:
In some cases the vehicle will start then stall, indicating a fuel level concern (less than a quarter of a tank). Before proceeding verify there is enough fuel in the tank for the vehicle to run.

1.	Use the FOB to start the vehicle.

Does the vehicle start when using the FOB?

Yes

At this time the Remote Start is functioning properly. Check for any related Starting, Communication, or Ignition related DTCs that may inhibit the Remote Starting feature. Check the TIPM for any previous Remote Start Inhibits and mileage that were stored. Inhibits may be found under the system tests or miscellaneous functions tab.

Go To 2

2. REMOTE START VISUAL ASSESSMENT

1.	When the FOB buttons are pressed for Remote Start usage the Horn should sound and the exterior parking lights should flash.

Does the horn sound and the exterior parking lights flash?

Yes

Go To 3

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3. CHECKING TIPM INHIBITS

NOTE:
Since the horn sounds and the parking lights flash, this verifies the TIPM is receiving the CAN BUS message from the WCM. It also verifies the RF signal for Remote Start from the FOB to the WCM is operating correctly.

1.	Using the scan tool, check the Remote Start inhibits of the TIPM or any ACTIVE DTCs listed in all modules.

NOTE:
Inhibits may be found under the system tests or miscellaneous functions tab. The fuel level may not be a listed inhibit.

Are there any Remote Start inhibits or any ACTIVE DTCs listed in the entire vehicle?

Yes

(Refer to 08 - Electrical/Starting/Diagnosis and Testing) for a complete list of Remote Start inhibits.
For any ACTIVE DTCs perform the appropriate diagnostic procedure in Section 28.

Check for any related TSBs prior to replacing the TIPM. If no related TSBs are found, then replace the TIPM in accordance with Service Inforrmation.(Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Totally Integrated Power (TIPM)/Removal).

4. RKE FUNCTION SHORT RANGE

1.	Standing next to the Driver door, note the RKE function of the FOB?

Does the RKE function?

Yes

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5. RKE FUNCTION MID RANGE

1.	Standing 20 feet from the vehicle, operate the RKE function of the FOB.

Does the RKE function at 20 feet?

Yes

Go To 6

Go To 7

6. RKE FUNCTION LONG RANGE

1.	Standing 100 feet from the vehicle, operate the RKE function of the FOB.

Does the RKE Function at 100 feet?

Yes

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Go To 7

7. FOB SIGNAL STRENGTH

1.	Use the RF Tester 9001 to check the signal strength of the FOB.

Does the FOB pass?

Yes

Go To 10

Go To 8

8. CHECKING THE FOB

1.	Replace the battery in the FOB with a known good battery and recheck the signal from the FOB with the RF Tester 9001.

Does the FOBs pass?

Yes

Go To 9

Check for any related TSBs prior to replacing the FOB. If no related TSBs are found, then replace the FOB in accordance with Service Information. (Refer to 08 - Electrical/Power Locks/TRANSMITTER, Integrated Key FOB/Standard Procedure)

9. CHECKING FOR ACTIVE DTCs

NOTE:
Since the RKE portion of the FOB is operational, it verifies that the WCM is capable of receiving signals and communicating to operate the locks.

1.	Use the scan tool to check for ACTIVE DTCs.

Did the diagnostic scan tool show any ACTIVE DTCs in the entire vehicle

Yes

Diagnose the DTCs in accordance with Service Information before proceeding with the Remote Start Inoperative concern.

Go To 10

10. CHECKING THE WCM

NOTE:
Even though the RKE function of the system may work with no concern, the TIPM is either not receiving a message or is receiving a corrupt message from the WCM for the remote start operation.

1.	While sitting in the driver’s seat and using the scan tool, monitor the WCM on the data display screen for changes when the Remote Start button of the FOBs is pressed.

Did the status change when the Remote Start button of the FOB is pressed?

Yes

Go To 11

Disconnect the Remote Start antenna. With the FOB next to the WCM attempt to start the vehicle and monitor the scan tool for a change in the status. If the status changes or the vehicle starts replace the Remote Start antenna. If there is no change in the status, check for any related TSBs. If no related TSBs are found, then replace the WCM in accordance with Service Information. (Refer to 08 - Electrical/8Q - Vehicle Theft Security/MODULE, Sentry Key Immobilizer (SKREEM) /Removal).

11. CHECKING TIPM INHIBITS

NOTE:
Since neither the parking lights flash nor will the horn will sound when the FOB is used, it is not known if the TIPM is the concern or if an “Inhibit” may be stopping the request from taking place.

1.	Use the diagnostic scan tool to check for any Remote Start inhibits listed in the TIPM. This may be found under the system tests or miscellaneous functions tab.

Were there any Remote Start Inhibits listed in the TIPM?

Yes

Perform the REMOTE START SYSTEM Diagnosing and Testing. (Refer to 08 - Electrical/Starting/Diagnosis and Testing)

If, this has had a Mopar Accessory kit installed verify the correct Sales Code for Remote Start has been added to Dealer Connect and a Restore Vehicle Configuration has been performed. Confirm the system is enabled; and the temporary Remote Start override is set to disabled in the TIPM and contact the Mopar Accessories group (800–84–Mopar) for further details before proceeding.
If, this has a factory installed Remote Start check for any related TSBs prior to replacing the TIPM. If no related TSBs are found, then replace the TIPM in accordance with Service Information.(Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Totally Integrated Power (TIPM)/Removal).