Test 132A - Bus Fault Messages
Battery must be fully charged before proceeding. Connect scan tool to Data Link Connector (DLC) to retrieve messages. Refer to the BUS FAULT MESSAGES table and proceed to appropriate test number.
BUS FAULT MESSAGES
| Fault Messages | Perform |
|---|---|
| BUS SHORT TO BATTERY | TEST 133A |
| BUS SHORT TO 5 VOLTS | TEST 134A |
| BUS SHORT TO GROUND | TEST 135A |
| BUS (+) & BUS (-) SHORTED TOGETHER | TEST 136A |
| NO TERMINATION | TEST 137A |
| BUS BIAS LEVEL TOO LOW | TEST 138A |
| BUS BIAS LEVEL TOO HIGH | TEST 138A |
| BUS (+) OPEN | TEST 138A |
| BUS (-) OPEN | TEST 138A |
| BUS (+) & (-) OPEN | TEST 138A |
| NO BUS BIAS | TEST 139A |
| NOT RECEIVING BUS MESSAGES CORRECTLY | TEST 140A |
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION
. For wiring schematics, see WIRING DIAGRAMS
in this article. Perform TEST VER-1 - VERIFICATION PROCEDURE
after each repair.
CAUTION:
Always turn ignition off prior to disconnecting any module connector.