Test 45A - Bus Communication With Pcm (DTC 19)
NOTE:
Perform TEST 2A
before proceeding with this test. For connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
. Perform VERIFICATION TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Ensure ignition is off. Disconnect Powertrain Control Module (PCM). Turn ignition on. Connect jumper wire between ground and terminal No. 59 on PCM connector.
- Using scan tool, select BODY, BODY COMPUTER, then SYSTEM TEST. Perform CCD BUS test. If scan tool does not display BUS SHORT TO GROUND, go to TEST 45B for JA/JX models. If vehicle is not a JA/JX model, repair open CCD BUS (+) circuit. If scan tool displays BUS SHORT TO GROUND, go to next step.
- Move jumper wire to terminal No. 60. Perform CCD BUS test. If scan tool does not display BUS SHORT TO GROUND, go to TEST 45C for JA/JX models. If vehicle is not a JA/JX model, repair open CCD BUS (-) circuit. If scan tool displays BUS SHORT TO GROUND, replace PCM.