GR8 ELECTRICAL SYSTEM TESTER
The Midtronics GR8 battery system tester is designed to help diagnose the cause of a defective battery. for directions on using the Midtronics GR8 battery tester. Refer to BATTERY, STANDARD PROCEDURE .
| BATTERY SYSTEM DIAGNOSIS | ||
|---|---|---|
| CONDITION | POSSIBLE CAUSES | CORRECTION |
| THE BATTERY SEEMS WEAK OR DEAD WHEN ATTEMPTING TO START THE ENGINE. | 1. The electrical system ignition-off draw is excessive. | 1. for the proper test procedures. Refer to BATTERY, STANDARD PROCEDURE . Repair the excessive ignition-off draw, as required. |
| 2. The charging system is inoperative. | 2. Determine if the charging system is performing to specifications. Refer to DIAGNOSIS AND TESTING . Repair the inoperative charging system, as required. | |
| 3. The battery is discharged. | 3. Determine the battery state-of-charge using the Midtronics GR8 battery tester. Refer to BATTERY, STANDARD PROCEDURE . Charge the battery as required. | |
| 4. The battery terminal connections are loose or corroded. | 4. Refer to CABLES, BATTERY, DIAGNOSIS AND TESTING . Clean and tighten the battery terminal connections, as required. | |
| 5. The battery has an incorrect size or rating for this vehicle. | 5. for the proper size and rating. Refer to SPECIFICATIONS . Replace an incorrect battery, as required. | |
| 6. The battery is inoperative. | 6. Determine the battery cranking capacity using the Midtronics GR8 battery tester. Refer to BATTERY, STANDARD PROCEDURE . Replace the inoperative battery, as required. | |
| 7. The starting system is inoperative. | 7. Determine if the starting system is performing to specifications. Refer to DIAGNOSIS AND TESTING . Repair the inoperative starting system, as required. | |
| 8. The battery is physically damaged. | 8. Inspect the battery for loose terminal posts or a cracked and leaking case. Replace the damaged battery, as required. | |
| THE BATTERY STATE OF CHARGE CANNOT BE MAINTAINED. | 1. The battery has an incorrect size or rating for this vehicle. | 1. for the proper size and rating. Refer to SPECIFICATIONS . Replace an incorrect battery, as required. |
| 2. The battery terminal connections are loose or corroded. | 2. Refer to CABLES, BATTERY, DIAGNOSIS AND TESTING . Clean and tighten the battery terminal connections, as required. | |
| 3. The electrical system ignition-off draw is excessive. | 3. for the proper test procedures. Refer to BATTERY, STANDARD PROCEDURE . Repair the inoperative electrical system, as required. | |
| 4. The battery is inoperative. | 4. Test the battery using the Midtronics GR8 battery tester. Refer to BATTERY, STANDARD PROCEDURE . Replace the inoperative battery, as required. | |
| 5. The starting system is inoperative. | 5. Determine if the starting system is performing to specifications. Refer to DIAGNOSIS AND TESTING . Repair the inoperative starting system, as required. | |
| 6. The charging system is inoperative. | 6. Determine if the charging system is performing to specifications. Refer to DIAGNOSIS AND TESTING . Repair the inoperative charging system, as required. | |
| 7. Electrical loads exceed the output of the charging system. | 7. Inspect the vehicle for aftermarket electrical equipment which might cause excessive electrical loads. | |
| 8. Slow driving or prolonged idling with high-amperage draw systems in use. | 8. Advise the vehicle operator, as required. | |
| THE BATTERY WILL NOT ACCEPT A CHARGE. | 1. The battery is inoperative. | 1. Test the battery using the Midtronics GR8 battery tester. Refer to BATTERY, STANDARD PROCEDURE . Replace the inoperative battery, as required. |
STARTER SOLENOID
| WARNING | Check to ensure that the transmission is in the park position with the parking brake applied. This may result in personal injury or death. |
- Verify battery condition. Battery must be in good condition with a full charge before performing any starter tests. Refer to «STANDARD PROCEDURE»(ref-485500-S04719518172012071300000) .
- Perform Starter Solenoid test BEFORE performing the starter relay test.
- Perform a visual inspection of the starter/starter solenoid for corrosion, loose connections or faulty wiring.
- Locate and remove the starter relay.
- Connect a remote starter switch or a jumper wire between the remote battery positive post and terminal 87 of the starter relay connector. If engine cranks, starter/starter solenoid is good. Go to «STARTER RELAY»(ref-485602-S17200666852012071300000) Test. If engine does not crank or solenoid chatters, check wiring and connectors from starter relay to starter solenoid and from the battery positive terminal to starter post for loose or corroded connections. Particularly at starter terminals. Repeat test. If engine still fails to crank properly, trouble is within starter or starter mounted solenoid, and replace starter. Inspect the ring gear teeth.
STARTER RELAY
| WARNING | Check to ensure that the transmission is in the park/neutral position with the parking brake applied. This may result in personal injury or death. |
SAFETY SWITCHES
For diagnostics of the Transmission Range Sensor, refer to the appropriate Transaxle information.
If equipped with Clutch Interlock/Upstop Switch, refer to appropriate Diagnosis and Testing in the Clutch information.
IGNITION SWITCH
After testing starter solenoid and relay, test ignition switch and wiring. Refer to the appropriate Ignition information or Wiring Diagrams for more information. Check all wiring for opens or shorts, and all connectors for being loose or corroded.
BATTERY
For battery diagnosis and testing, refer to the DIAGNOSIS AND TESTING for procedures.
REMOTE START INHIBITORS
- Using the scan tool, select ECU VIEW.
- Select the TIPM or FCM section.
- Select MORE OPTIONS
- Select SYSTEM TESTS
- Select REMOTE START INHIBIT DATA.
The following table below is a list of possible causes for the inoperative Remote Start System. If any of the following conditions exist, the Remote Start System will not work. Use this information as a guide to the diagnosis of the Remote Start System.
- ABORT
- BATTERY VOLTAGE HIGH
- BATTERY VOLTAGE LOW
- BRAKE PRESSED
- COOLANT TEMPERATURE HIGH
- CRANK NO START
- DRIVER DOOR AJAR
- PASSENGER DOOR AJAR
- LEFT REAR DOOR AJAR
- RIGHT REAR DOOR AJAR
- TRUNK/LIFTGATE AJAR
- HOOD AJAR
- NO HOOD SWITCH (INOPERATIVE)
- EXCESSIVE GLOW PLUG TIME (DIESEL ONLY)
- FAILED COUNTER REACHED (START)
- HAZARD LAMPS (SWITCH PRESSED)
- IGNITION IN RUN/START
- IGNITION NOT IN LOCK
- IGNITION SNA (SIGNAL NOT AVAILABLE FROM OTHER MODULE)
- INVALID KEY
- KEY IN IGNITION
- LOW RPM SHUTDOWN
- MIL ON
- NO AUTOMATIC TRANSMISSION
- NORMAL TIME OUT CUSTOMER ACCESS
- NORMAL TIME OUT RUN MODE (15 MINUTES)
- NOT CONFIGURED
- NOT ENABLED
- NOT IN PARK OR NEUTRAL
- NOT PROGRAMMED
- OIL PRESSURE LOW
- PANIC MODE (ACTIVATED)
- POWER LOSS
- RKE OFF MESSAGE
- RPM TOO HIGH (EXCEEDS 2500)
- START COUNTER REACHED
- VEHICLE SPEED HIGH
- VTA ALARMING
If all of the previous items checked OK, and the remote starting system will not operate, refer to the REMOTE START POOR PERFORMANCE diagnostic procedure. . Refer to DIAGNOSIS AND TESTING .
REMOTE START POOR PERFORMANCE
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .