Cx840 Series 1206 - 1237, Cx860 Series 1238 - 1281, Cx860 Series 1206 - 1237, Cx880 Series 1238 - 1281, Cx880 Series - New Holland CX720 Repair Manual

E0163-05-Engine Air Filter sensor Line Disconnected (B.30.A.95.81
- G.30.B.50)
CX720 Series 1238 - 1281, CX720 Series 1206 - 1237, CX740 Series 1238 - 1281, CX740 Series 1206 - 1237, CX760 Series 1238 - 1281, CX760 Series
1206 - 1237, CX780 Series 1238 - 1281, CX780 Series 1206 - 1237, CX820 Series 1238 - 1281, CX820 Series 1206 - 1237, CX840 Series 1238 - 1281,

CX840 Series 1206 - 1237, CX860 Series 1238 - 1281, CX860 Series 1206 - 1237, CX880 Series 1238 - 1281, CX880 Series 1206 - 1237

E0163-05 - Engine Air Filter sensor Line Disconnected
NOTE: This troubleshooting chart is for CX combines Series 1206 - 1281 only.
Cause:
The engine air filter sensor (B-07) circuit is open or shorted to ground.
Possible failure modes:
1. Sensor signal wiring open or shorted to ground.
2. Loss of power to the sensor.
3. Controller internal failure (internal regulator failure).
Solution:
1. Enter the InfoView Monitor - "Diagnose info" screen.
Select "Engine" sub menu.
Select "Engine air filter sensor" and check voltage range.
The proper voltage range for the engine air filter sensor (key On, engine Off or Running) is — 0.3 - 5.2 volts.
A. If the voltage reading is low out of range (<0.3 volts) continue with Step 2.
B. If the voltage is normal the shorted wire may not be grounded t this time. Continue with step 5.
NOTE: Visually inspect the wiring harness and connectors. Verify that the connector was fully installed. Inspect
the terminals and wires at the connector for pushed back or corroded terminals or damaged wires. Flex the
harnesses involved to reveal intermittent breaks or shorts in the wiring concerned.
2. The voltage reading on the InfoView monitor is low (<0.3 volts). Disconnect the air filter pressure sensor con-
nector X202. Use a multimeter to check for voltage on connector X202 pin B. There should be 5 volts present.
A. If no voltage is found, continue with step 3.
B. If correct voltage is found, continue with step 5.
3. Disconnect the engine harness from the main frame harness at connector X010. Use a multimeter to check for
voltage on connector X010 pin 13. There should be 5 volts present.
A. If voltage is found, there is an open circuit in the engine (EN) harness between connector X202 pin B and
connector X010 pin 13 wire 469 pink or 463 pink. Locate the open and repair.
B. If no voltage is found, continue with step 4.
4. Carefully disconnect the main frame harness from the CCM2 module at connector X016. Use a multimeter to
check for voltage on the CCM2 module connector X016 pin J2-31. There should be 5 volts present.
A. If voltage is found, there is an open circuit in the main frame (MF) harness between connector X010 pin
13 and connector X016 pin J2-31 wire 459 pink or 463 pink. Locate the open and repair.
B. If no voltage is found, there is an internal fault with the CCM2 module. Replace the module.
5. The voltage reading on the InfoView monitor is low (<0.3 volts). Disconnect the air filter pressure sensor con-
nector X202. Use a multimeter to check for continuity between connector X202 pin C and chassis ground.
A. If continuity is found, continue with step 6.
B. If no continuity is found, continue with step 7.
POWER PRODUCTION - AIR INTAKE SYSTEM
2 4/7/2006
B.30.A / 47