G.30.B.46) - New Holland CX720 Repair Manual

E0199-11-Brake Lights relay Unidentified Failure Code (A.40.A.14.82

- G.30.B.46)

E0199-11 - Brake Lights relay Unidentified Failure Code
Cause:
The Brake lights Relay (K-33) circuit is open, or shorted to ground.
Possible failure modes:
1. Supply wiring damaged.
2. Bad relay.
3. Controller internal failure (internal regulator failure).
Solution:
1. Enter the Infoview monitor - Dealer Diagnostics screen.
Select "CCM2" sub menu.
Select "Brake Lights relay" and select the "Status" screen. Press the "Enter" key to manually power the circuit.
The status screen should indicate "OK" if the circuit is working properly.
A. If the status screen indicates "Error", the circuit is open or shorted to ground. Continue with Step 2.
B. If the reading is within the proper range, the circuit is working properly. Continue with step 7.
2. Turn the key switch to the OFF position and remove the Brake Lights Relay K33. Use a multimeter to check the
resistance of the relay coil. The proper resistance range for the relay coil is 74.3 - 78.3 ohms.
A. If out of specification replace relay.
B. If the coil is within specification continue with Step 3.
3. Use a multimeter to check for continuity between relay socket pin 1 and chassis ground.
A. If no continuity to ground is found continue with Step 4.
B. If there is continuity to ground, there is a short to ground on wire 183 white in the cab main (CM) harness
between the fuse panel and connector X015 pin J1-18. Locate the short and repair.
4. Use a multimeter to check for continuity between relay socket pin 2 and chassis ground.
A. If continuity to ground is found continue with Step 5.
B. If there is no continuity to ground, there is an open circuit on wire 159 black in the cab main (CM) harness
between the fuse panel and cab ground 3. Locate the open and repair.
5. Turn the key switch to the ON position. Use the Infoview monitor - Dealer Diagnostics screen to manually power
the brake lights relay. Use the multimeter to check for 12 volts between relay socket pin 1 and chassis ground.
A. If 12 volts is not present continue with Step 6.
B. If 12 volts is found continue with Step 7.
6. Key switch to the ON position. Use the Infoview monitor - Dealer Diagnostics screen to manually power the
brake lights relay. Use the multimeter to check for 12 volts between connector X015 J1-18 and chassis ground.
A. If 12 volts is not present, replace the CCM2 with a known good controller.
B. If 12 volts is present, the open is between connector X015 J1-18 and relay socket pin 1 wire 183 white.
Locate the open and repair.
7. Erase the fault code and continue operation.
DISTRIBUTION SYSTEMS - LIGHTING SYSTEM
2 4/7/2006
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