Gen3 - Fault - Not Powering On
The Camera/Power Port on the CCIM that accepts the main power loom and is the entry point of DC power for the entire Gen-3 system.
To diagnose a power issue, first isolate the CCIM and Display from the rest of the Gen-3 system. This is accomplished by disconnecting any CCIM screw in CAN connectors. If the system boots without the downstream CAN devices, then either one of the CAN cables has a shorted 12 Volt supply line, or one of the downstream Gen-3 devices has an internal power supply short.
When the Display and CCIM have been isolated from the rest of the system and a power supply issue remains, then the next thing to check would be the main DC power loom:
- Check for the presence of 12V and Ground at the CCIM Camera/Power port.
- Verify that 12V is seen at the 3-Pin Power connector (radio power terminal), when the (key) power switch is activated
- Unplug the Camera/Power plug from the CCIM Camera/Power port and visually inspect the pins for damage. It's possible to bend/fold a pin and not know it. If a bent pin is found then carefully straighten that pin with some very fine tip pliers.
- Then push the plug back into the CCIM firmly making sure that it is driven as far as it can go.
- Then check that the 3 pin power connector on the main loom has the correct voltages.
The 3 pin connector is attached to the power/camera harness (pinout below).
- Pin 1 - Ground - Test for continuity between this pin and the chassis/main battery ground
- Pin 2 - 12V accessories - This should be 12V when accessories is active; This is the line that triggers the Gen-3 to power on and is activated when the machine start key is turned
- Pin 3 - 12V constant - This should be a constant 12V power supply; This is the main power source for the Gen-3
Check the 12V signals on pins 2 and 3 on the 3 pin connector, if either of these voltages are not correct then the Gen-3 system won't power on. If the voltages are not correct, then double check the 24V to 12V converter (if installed). Depending on which version has been supplied, there should be a 24V relay attached to the side of the regulator which supplies the 12V accessories signal, as well as a link wire between the 24V and 12V grounds.
If all expected voltages are verified then you can go on to the next step of checking the CCIM and basic CCIM functionality.
To diagnose a power issue within the CCIM, the first thing to check would be to verify the two 3A power fuses are not blown. The four CCIM lid screws need to be unscrewed and the lid opened to gain access to the fuses. With the CCIM cables facing you, the fuses are located on the PCB left hand side. With power connected and using a voltmeter, check the input terminal of the fuse for presence of 12V. Replace any blown blade fuses with the correct rating of 3 amps.
Two 3 Amp blade fuses in the CCIM
If both fuses are intact then proceed with basic CCIM functionality testing.
To check the CCIM is functioning correctly, disconnect the cable from the display and switch the machine to accessories, you should hear a relay click in the CCIM about every 5-10 seconds, this is the processor in the CCIM resetting power as it can't communicate with the display. The cover on the CCIM might need to be removed to better hear the relay clicking. If the CCIM is receiving supply power and there is no relay clicking, then there is most likely an issue with the CCIM electronics.
If the CCIM is working, reconnect the cable to the display. Repeat the same test as above, if you still hear the clicking of the relay, then there is a problem communicating with the display, which could mean either an issue with the display or the CCIM to Display cable.
Other than the two blade fuses in the CCIM, neither the CCIM nor the Display have other user serviceable components. If a power up fault has occurred in either of these units, then they will need to be shipped back to EQSS for diagnoses and repair.
Related Articles
Gen3_ITC - Fault Code - All Gen 3 Fault codes
Gen 3 Fault codes are displayed in Red color and are displayed on the Gen 3 operator screen To further identify the fault (via the Gen 3_ITC Display), enter the Menu System, then select System Faults. This will display a list of the current system ...Gen3 - Fault Code - All Gen 3 Fault codes
Gen 3 Fault codes are displayed in Red color and are displayed in the same - on screen section as the 'Attachment' field On screen Fault codes location. Fault and fault codes are only displayed if a fault has actually occurred (blank normally). To ...Gen3 - Fault Code - T01
This fault code can appear when a component of the Gen 3 system has been replaced and/or reprogrammed (usually the CSDM display). The remedy that usually clears this fault is the re-calibration of the boom angle. To achieve this task requires the ...Gen3 - Fault Code - T03
This fault code can appear when a component (CPIM) of the Gen 3 system has been replaced/moved and can sometimes be intermittent during telehandler operation with shifting weight. The remedy that usually clears this fault is the re-calibration of the ...Gen3 - Fault Code - T05
This fault code can appear when the Gen 3 is not able to write to the SD card. There are two common causes for this error code: 1. Write Lock Tab on the SD card has been set to 'Locked'. 2. SD card carrier in the EQSS Display unit is faulty. ...