Curtis 1515 Controller Installation and Troubleshooting Guide
This document provides guidance for the installation and troubleshooting of the remanufactured CURTIS 1515 controller for Club Car Precedent Excel vehicles.
Pre-Installation Checks & Warranty Information
WARRANTY WILL BE VOID If These Steps are Not Performed Before Installing The Control.
Steps to Perform Before Control Installation
Check Motor Windings
- Set your Volt Ohm Meter (VOM) to RESISTANCE (Ω).
- With the motor disconnected, measure A1 to A2: must be BETWEEN 0.3Ω and 1Ω.
- With the motor disconnected, measure F1 to F2: must be BETWEEN 1Ω and 2Ω.
- With the motor disconnected, measure A1 to F1: must measure OPEN.
- With the motor disconnected, measure F1 to motor case: must measure greater than 5MΩ.
Check Main Solenoid
- Disconnect all wires from the main solenoid.
- Set your VOM to RESISTANCE (Ω).
- Measure the solenoid coil: must measure NO LESS than 100Ω.
- Connect VOM leads to the main solenoid lugs.
- Attach jumpers from main battery positive and negative to the coil (small terminals).
- Meter must jump from infinity to LESS THAN 0.3Ω.
- Remove jumpers and reconnect solenoid wiring from the harness. (If a suppression diode is present, the non-banded side must go to the blue/white wire – pin 12 from controller.)
Check the Cart Wire Harness
- Check the connectors on the wire harness for corrosion, loose, broken, burnt, or missing pins.
- Repair or replace pins as necessary.
If any of the above items are not within the specified ranges, the controller will fail. These items must be corrected before the controller is installed, or warranty will be void.
It is recommended to replace your solenoid at the time of controller replacement. FSIP now stocks popular replacement White Rodgers solenoids for your convenience.
Controller Wiring Diagram
The CURTIS 1515 controller connects to various components of the Club Car Precedent Excel. The diagram illustrates the connections for the 48V Battery Pack, Main Contactor, Motor Armature, Motor Fields, MCOR, OBC, Speed Sensor, Smart Box/GPS, Optional Brake Pot, Run/Tow Switch, Directional Switch, Reverse Alarm, Key Switch, Pedal Switch, Main Contactor Coil, and Optional Suppression Diode.
Controller Connectors:
J1 (viewed from wire side of connector):
- 16: Unused
- 15: Speed Sensor High Out
- 14: Speed Sensor In
- 13: Smart Box/GPS Out
- 12: Main Solenoid Driver
- 11: Unused
- 10: Key Switch In
- 9: B+ Aux In
- 8: Forward In
- 7: Reverse Alarm Driver
- 6: Pedal Switch In
- 5: Power Down
- 4: Brake Wiper In (Optional)
- 3: Throttle & Speed Sensor Low
- 2: Throttle Wiper In
- 1: Throttle High Out
J2:
- 1: Rx Data
- 2: B-
- 3: Tx Data
- 4: +15V
Troubleshooting Sequence
Safety First: Always lift the drive wheels off the ground when troubleshooting.
All tests are conducted with the Run-Tow/Maintenance switch in the RUN position. The connector must be attached to the controller during checks. Use a paperclip to 'back probe' the pins from the wire side of the connector if necessary.
Attach voltmeter negative (-) lead to the main battery for the following tests.
Use the following sequence when checking individual pins. If a fault is found, do not proceed to the next step until the fault is corrected.
Measure the voltage at the main battery positive post (referred to as Pack Voltage).
| Pin | Test Condition | Expected Value | Troubleshooting Notes |
|---|---|---|---|
| 5 | With Charger disconnected | > 30V (If less than 30V, control will be dead) | If not, OBC may be in sleep mode. Charge for 1 min, disconnect, recheck. If still < 30V, may have OBC issue. |
| 9 | Equal to Pack Voltage | If not, check wiring, Sense Diode (if present), Run-Tow/Maintenance Switch, or Fuse. | |
| 8 | With F/R Switch in Forward | Equal to Pack Voltage | If not, check wiring and F/R Switch for an open condition. |
| 16 | With F/R Switch in Reverse | Equal to Pack Voltage and Reverse Alarm should sound | If not, check wiring and F/R Switch for an open condition. |
| 7 | With F/R Switch in Reverse | 0V and Reverse Alarm should sound | If not 0V, check wiring and Reverse Alarm for an open condition. |
| 10 | With Key On | Equal to Pack Voltage | If not, check Key Switch for open condition. |
| 12 | Equal to Pack Voltage | If not, check wiring and Main Solenoid Coil for an open condition. | |
| 6 | With Pedal Up | 0V | If not 0V, check wiring and Pedal Switch for a shorted condition. |
| 6 | With Pedal Down | Equal to Pack Voltage | If not, check wiring and Pedal Switch for an open condition. |
| 12 | With Pedal Down | Approximately 0V | If not approximately 0V, check wiring and Main Solenoid Coil. |
| 1 | (MCOR) | 5V | If not 5V, check wiring. If voltage goes to 5V with MCOR removed, replace MCOR. |
| 3 | 0V | If not 0V, harness and/or harness connector is defective, check wiring. | |
| 2 | With Pedal Up | Approximately 0.3 volts | If not 0.3 volts, check wiring and MCOR. |
| 2 | With Pedal fully depressed | 4.15 to 4.45 volts | If not, check wiring and MCOR. |
| 15 | (Speed Sensor) | Approximately 15-16 volts | If not, check wiring. If voltage goes to 15 volts with Speed Sensor removed, replace Speed Sensor. |
| 14 | (Motor Rotation) | Toggle between 0 and approx. 5 volts as Motor rotates | While slowly turning the drive wheel. If not toggling, check wiring and replace Speed Sensor if necessary. |
| 4 | (Brake Pot Input, if equipped) | Approx. 0 – 5V as brake pedal depressed | If not, check wiring and Brake Pot (if equipped). |
Troubleshooting Fault Codes
| Fault | Causes/Resolutions | Fault | Causes/Resolutions |
|---|---|---|---|
| HW Failsafe | Internal Failure. | Overvoltage | Voltage is >68.4 - 75.6V. Faulty Batteries or shorted component to frame of cart. Check batteries and for loose connection. |
| Throttle Fault | Throttle Wiper < 0.2V or > 4.8V. Faulty wiring or MCOR. Test MCOR. | Low Battery | Voltage is <34V. Faulty Batteries or wiring. Check batteries and for loose connection. |
| Speed Sensor | Speed Sensor pulses not detected. Test Speed Sensor. | Thermal Cutback | Controller Heatsink > 85C. Possible brakes dragging, car under extreme loads or tire pressure issues. Check for non-stock modifications and mechanical issues. |
| Main Welded | Main contacts are welded closed. Possible shorted contactor or external B+ short. Test Main Contactor. | Motor Stall | Motor Current is high with no travel detected. Faulty motor or motor wiring. Check motor, wiring and speed sensor. |
| Main Driver On | Main contacts detected closed when not commanded. Possible shorted contactor or external B+ short. Test Main Contactor/controller. | Main Dropout (1 and 2) | Main contacts opened when traveling. Check Main Solenoid and wiring. |
| Main Driver Off | Main contacts detected open when commanded closed. Possible faulty contactor. Test Main Contactor/controller. | Current Sense Fault | Motor Armature Current issue. Check motor, wiring and speed sensor. |
| Main Coil Open | Main Solenoid Coil not closing. Possible wiring issue, a defective solenoid coil or faulty suppresion diode. Test Main Contactor or wiring. | Main Driver Overcurrent | Current at Main Coil detected high. Faulty Solenoid Coil, wiring issue or incorrect solenoid. Test Main Solenoid. |
| Field Missing | Field current detected by controller is less than expected. Possible faulty Motor or Motor wiring. Test Motor and wiring. Test controller. | M- Shorted | Voltage detected at M- Post of controller is lower than expected. Faulty motor, wiring or possible shorted controller. Check motor Armature for open/short and motor wiring. Test controller. |
| HPD (High Pedal Disable) | Pedal is already depressed when key is turned ON. Faulty pedal switch or wiring. Test pedal switch. |
Technical Support & Resources
FSIP Electronics offers additional technical support:
- Troubleshooting Manuals / Codes: www.shop.fsip.biz/en/content/technical-documents
- Live Tech Support Chat: www.shop.fsip.biz
- Technical Support Forum: fsip.websitetoolbox.com
PRE-INSTALLATION INSTRUCTIONS MUST BE FOLLOWED OR WARRANTY WILL BE VOID
IMPORTANT! 1515 TROUBLESHOOTING INFORMATION INCLUDED IN THIS PACKET
Sheet 4 of 4
77-Club Car Precedent EXCEL (1515) Install Sheet-370 Rev 02 7/28/2025
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