PINPOINT TEST F: DTCs B1355 AND B1359

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

F1 CHECK THE IGNITION SWITCH
- Ignition OFF.
- Carry out the IGNITION SWITCH Component Test. Refer to appropriate "OEM Wiring Diagrams Component Testing" article for component testing.
- Is the ignition switch OK?
- Yes : For DTC B1355, GO to F2.
  For DTC B1359, GO to F4.
- No : INSTALL a new ignition switch. REFER to Ignition Switch . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
F2 CHECK THE CDIM RUN/ACC INPUT CIRCUIT FOR AN OPEN
- Disconnect: Ignition Switch C250.
- Disconnect: CDIM C2500.
- Measure the resistance between ignition switch C250-6, circuit CDC33 (VT/GN), harness side and CDIM C2500-1, circuit CDC33 (VT/GN), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to F3.
- No : REPAIR circuit CDC33 (VT/GN). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
F3 CHECK THE CDIM RUN/ACC INPUT CIRCUIT FOR A SHORT TO GROUND
- Disconnect: BCM C2280A.
- Measure the resistance between ignition switch C250-6, circuit CDC33 (VT/GN), harness side and ground.
  
  Fig 2: Measuring Resistance Between Ignition Switch C250-6, Circuit CDC33 (VT/GN) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10, 000 ohms?
- Yes : GO to F6.
- No : REPAIR circuit CDC33 (VT/GN). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
F4 CHECK THE CDIM RUN/ACC OUTPUT CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: CDIM C2500.
- Disconnect: BCM C2280B.
- Measure the resistance between CDIM C2500-8, circuit CDC63 (YE/OG), harness side and BCM C2280B-35, circuit CDC32 (BN/YE), harness side.
  
  Fig 3: Measuring Resistance Between CDIM C2500-8, Circuit CDC63 (YE/OG) And BCM C2280B-35, Circuit CDC32 (BN/YE)
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to F5.
- No : REPAIR circuit CDC63 (YE/OG). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
F5 CHECK THE CDIM RUN/ACC OUTPUT CIRCUIT FOR A SHORT TO GROUND
- Measure the resistance between CDIM C2500-8, circuit CDC63 (YE/OG), harness side and ground.
  
  Fig 4: Measuring Resistance Between CDIM C2500-8, Circuit CDC63 (YE/OG) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10, 000 ohms?
- Yes : GO to F6.
- No : REPAIR circuit CDC63 (YE/OG). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
F6 CHECK THE CDIM CONNECTOR
- Check the CDIM connector for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Repair any identified concerns.
- Connect the ignition switch connector and make sure it seats correctly.
- Clear the DTCs.
- Enter the following diagnostic mode on the scan tool: CDIM Self-Test.
- Is DTC B1355 or B1359 still present?
- Yes : INSTALL a new CDIM. REFER to Circuit Deactivation Ignition Module (CDIM) . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a poor or intermittent connection.