CLEANING GP- 2337191 - Caterpillar

Illustration 1 g00562247
(1) Chassis Control Module. (2) Memory Unswitched Power "MDP-F25". (3) Control Modules Switched Power "MDP-F23". (4) Cab Ground.This fault code indicates the Chassis Control Module (CCM) has reported a lockup (all input channels appear zero) to the EMC.
Inspect all CCM connectors, ground wires and cab ground strap for loose fitting connectors or pulled out terminals.Expected Result: The connectors are loose. The terminals are pulled out.
YES, reconnect connectors or reattach terminals for proper fit and recheck fault codes. If fault code is not active, repair is complete.
NO, go to Step 2.
Measure the resistance from the CCM connector C006-5 and C006-13 to the cab ground post, while moving or flexing the harness.Expected Result: There is an open circuit.
YES, locate and repair open circuit in the Cab Main harness. Check fault code and if no longer active the repair is complete.
NO, go to Step 3.
Measure the resistance from the cab ground post to the cab mount termination, while moving or flexing the ground strap.Expected Result: There is an open circuit.
YES, locate and repair open circuit in the cab ground strap by cleaning grease, oil and/or corrosion from the ground strap attachment points. Check fault code and if no longer active the repair is complete.
NO, go to Step 4.
Measure the resistance (or check for +12 volts to chassis ground) from the CCM connector C006-6 to the MDP-F25 and from C006-21 to MDP-F23, while moving or flexing the harness.Expected Result: There is an open circuit.
YES, locate and repair open circuit in the Cab Main harness. Check fault code and if no longer active the repair is complete.
NO, go to Step 5.
Download the latest software into all control modules.Expected Result: The fault code is active.
YES, go to Step 6.
NO, repair is complete.
Replace the Chassis Control Module (CCM).Expected Result: The fault code is active.
YES, install the original CCM and repeat this troubleshooting procedure.
NO, go to Step 7.
Install the original CCM.Expected Result: The fault code is active.
YES, original CCM was faulty. Replace original CCM with new CCM. If fault code is not active, repair is complete. Download latest control module software into all modules. Calibrate transmission and three-point hitch.
NO, this fault code may have been caused by faulty connectors. Keep the original on the tractor. Clean all terminals on the CCM and reconnect. If fault code is not active, repair is complete. Download latest control module software into all modules. Calibrate transmission and three-point hitch.