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Jump Assist



Jump Assist

Scan Tool Initiated Procedure

1. Turn the ignition key to the RUN position.
2. Observe the HPCM 300 V Circuit voltage in the APM data list on the scan tool.

^ If the voltage is less than 194 volts, Jump-Assist will not initiate and the drive motor generator battery must be replaced. Refer to Drive Motor Generator Battery Replacement.

Important: Use a 12 volt DC battery charger rated at greater than 20 amps continuous.

3. Connect the 12 volt DC battery charger to the 12 volt vehicle connections ensuring that an electrically sound and firm connection is made.
4. Plug in the 12 volt DC battery charger and make certain that it is in the highest continuous CHARGE (Not START) state available. If required, turn the Charger on.
5. Connect the scan tool and navigate to the APM Special Functions menu.
6. Press the Jump-Assist soft-key on the Scan Tool. The Driver Information Center (DIC) on the instrument panel should now display "JUMP ASSIST NEEDED".
7. Turn the ignition key to the OFF position.
8. Jump-Assist will initiate and a transfer of energy between the 12 volt DC battery charger and the drive motor generator battery will occur through the APM.
9. The APM Data Display can then be used to monitor the progression of Jump-Assist. By noting the APM 300V Circuit Current, the total amount of time for Jump-Assist to be completed can be estimated with the following table:
10. The scan tool may also be removed if needed. Jump Assist will continue until the drive motor generator battery is completely charged or the ignition key is turned to the "RUN" position at which time Jump Assist will abort.






Automated Jump Assist Procedure

1. Attempt to start the engine by cycling the ignition key to the START position.

^ If the engine starts, Jump Assist is not required and this procedure will not be available.

2. Leave the key in the RUN position.
3. If the vehicle failed to crank the engine due to a depleted Drive Motor Generator Battery, the DIC on the instrument panel should now display "Jump Assist Required".
4. A powered charger or jumper cables connected to a running vehicle must now be connected to the Accessory Battery in order for the Hybrid Powertrain Control Module to see a rise on the 14 volt line above 13.0 volts.
5. The key should now be turned to the OFF position. The DIC should now display "Jump Assist in Progress".

^ If the DIC displays "Jump Assist Aborted" the procedure should be started at Step 1 again. Ensure that when the charger or jumper cables are connected a sound and positive connection is made.

6. Jump Assist will continue until 0.9 Amp-Hours of energy is transferred into the drive motor generator battery. At that point the DIC will display "Jump Assist Complete".
7. The vehicle can now be started.
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