Monitor Conditions
- When Monitored: With the ignition on.
Set Conditions
- Set Condition: The Electronic Overhead Module detects an internal switch failure.
Possible Causes
| Possible Causes |
|---|
| ELECTRONIC OVERHEAD MODULE |
- When Monitored: With the ignition on.
- Set Condition: The Electronic Overhead Module detects an internal switch failure.
Refer to B1A32-UNIVERSAL GARAGE DOOR SWITCH 1 STUCK for the diagnostic procedure.
- When Monitored: With the ignition on.
- Set Condition: The Electronic Overhead Module detects an internal switch failure.
Refer to B1A32-UNIVERSAL GARAGE DOOR SWITCH 1 STUCK for the diagnostic test procedure.
- When Monitored: With the ignition on.
- Set Condition: The Electronic Overhead Module detects an internal failure.
| Possible Causes |
|---|
| ELECTRONIC OVERHEAD MODULE |
B222D - ECU UNABLE TO CONFIGURE / CONFIGURATION NOT LEARNED
For the Electronic Overhead Module circuit diagram (Refer to ELECTRICAL/INSTRUMENT CLUSTER - SCHEMATICS AND DIAGRAMS) .
- When Monitored: With the ignition on.
- Set Condition: The Electronic Overhead Module does not receive the configuration information from the Front Control Module.
| Possible Causes |
|---|
| NO COMMUNICATION WITH FRONT CONTROL MODULE |
| ACTIVE FCM DTCs |
| ELECTRONIC OVERHEAD MODULE |
- When Monitored: With the ignition on.
- Set Condition: The magnetic field around the vehicle is greater than 2.4 guass.
- When Monitored: Continuously.
- Set Condition: Whenever the Can B Bus (+) or Can B Bus (-) circuit is open, shorted to voltage or shorted to ground, this code will set.
| Possible Causes |
|---|
| CAN B BUS DTCs IN FRONT CONTROL MODULE |
| (D54) CAN B BUS (-) CIRCUIT OPEN |
| (D55) CAN B BUS (+) CIRCUIT OPEN |
| ELECTRONIC OVERHEAD MODULE |
Scheme 14
Scheme 14: Diagnostic Test
Scheme 15
- 1) TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display U0019-CAN B BUS CIRCUIT? Yes Go To step 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
- 2) CHECK FRONT CONTROL MODULE DTCs With the scan tool, read Front Control Module DTCs. Does the scan tool display any CAN B BUS DTCs - ACTIVE? Yes Refer to the symptom list for problems related to Communication in «ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSES»(ref-247630-S04603774772007020100000) . No Go to step 3) .
- 3) CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Electronic Overhead Module harness connector. Disconnect the Front Control Module C1 harness connector. Measure the resistance of the (D55) Can B Bus (+) circuit between the Front Control Module C1 harness connector and the Electronic Overhead Module harness connector. Is the resistance below 2.0 ohms? Yes Go To step 4) . No Repair the Can B Bus (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
- 4) CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) Can B Bus (-) circuit between the Front Control Module C1 harness connector and the Electronic Overhead Module harness connector. Is the resistance below 2.0 ohms? Yes Replace the Electronic Overhead Module. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) . No Repair the Can B Bus (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-247618-S35373433422007020100000) .
