PULLER G-SLIDE 6V2166 - Caterpillar

Illustration 5 g00675569
Relay connector
Ensure that all connectors are connected to the wiring harness.
Start the engine.
Use a multimeter to measure the voltage between terminal 86 (Control Valve Warm Up) of the relay and terminal 85 (Solenoid Return) of the relay.
Turn the keyswitch to the OFF/RESET position.Expected Result:The voltage is 24.0 8.0 VDC.Results:
OK - The relay is faulty.Repair: Replace the relay.Verify that the repair eliminates the problem.STOP
Not OK - Proceed to Test Step 9.Test Step 9. Check for Shorts in the Harness between the Relay and the ECM
Illustration 6 g00675570
ECM connector P1
Illustration 7 g00684747
ECM connector P2
Disconnect ECM connector J1/P1.
Disconnect ECM connector J2/P2.
Disconnect the plug for the relay.
Measure the resistance between P1-28 (Control Valve Warm Up) and engine ground.
Measure the resistance between P1-28 (Control Valve Warm Up) and all the other pins on the P1 and the P2 connectors.
Measure the resistance between P2-7 (Solenoid Return) and engine ground.
Measure the resistance between P2-7 (Solenoid Return) and all the other pins on the P1 and the P2 connectors.Expected Result:The resistance is greater than 20,000 Ohms.Results:
OK - Proceed to Test Step 10.
Not OK - There is a short between the ECM and the hydraulic control valve warm up relay.Repair: Repair the circuit.STOPTest Step 10. Check for Open Circuits in the Harness between the Relay and the ECM
Illustration 8 g00675570
ECM connector J1/P1
Illustration 9 g00684747
ECM connector J2/P2
Illustration 10 g00675569
Hydraulic control valve warm up relay connector
Turn the keyswitch to the OFF position.
Disconnect ECM connector J1/P1.
Disconnect ECM connector J2/P2.
Use a suitable piece of wire to short P1-28 (Control Valve Warm Up) and P2-7 (Solenoid Return) at the ECM connectors.
Disconnect the plug for the relay.
Measure the resistance between terminal 86 (Control Valve Warm Up) and terminal 85 (Solenoid Return) of the connector for the relay.Expected Result:The resistance is less than ten Ohms.Results:
OK - Proceed to Test Step 11.
Not OK - There is an open circuit in the wiring harness between the relay and the ECM.Repair: Repair the circuit.Verify that the repair eliminates the problem.STOPTest Step 11. Verify That the ECM is Producing a Valid Signal to the Relay
Connect Cat ET to the service tool connector.
Start the engine.
Proceed to the "Status" screen in Cat ET.
Check the status of the warm-up.
Operate the control levers for the boom of the machine.
Check the status of the warm-up.
Turn the keyswitch to the OFF/RESET position.Expected Result:Cat ET shows that the warm-up is active before the control levers are moved. Cat ET shows that the warm-up is not active when the control levers are moved.Results:
OK -