Overhead Junction Block: Inspection
- INSPECT OVERHEAD JUNCTION BLOCK ASSEMBLY
Disconnect the connector from the overhead J/B, and inspect the connector on the wire harness side, as shown.
OVERHEAD JUNCTION BLOCK ASSEMBLY CONDITIONTester connection Condition Specified condition 1 -Ground Always Continuity 8 - Ground Always Battery positive voltage 11 - Ground Ignition switch OFF or ACC No voltage Ignition switch ON Battery positive voltage If continuity is not as specified, repair or replace the wire harness.
- Overhead J/B side:
INSPECT OVERHEAD JUNCTION BLOCK ASSEMBLY
OVERHEAD JUNCTION BLOCK ASSEMBLY CONNECTIONCircuit name Tester connection Specified condition Power source circuit A8-B6-E6 Continuity Power source circuit A11-B8-G1 Continuity Ground circuit A1-B2-E8-D3-F1 Continuity Microphone circuit A2-B10-G4 Continuity Microphone circuit A3-B9-G2 Continuity Mayday switch circuit A13-B7-F4 Continuity Mayday switch circuit A7-B4-F3 Continuity Mayday switch circuit A14-B3-F12 Continuity if continuity is not as specified, replace the overhead J/B assembly.