DTC Troubleshooting
WARNING: This page is about a different car, the 2006 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
TEST PROCEDURE - CAN COMMUNICATION ERROR (A/T ONLY)
| Step |
Action |
YES |
NO |
| 1 |
- Turn ignition switch to OFF position.
- Disconnect connectors from BCM and TCM.
- Check for proper connection to BCM and TCM at applicable terminals.
- If OK, measure resistance between "G53-9" terminal of BCM connector and "G07-1" terminal of TCM connector, between "G53-1" terminal of BCM connector and "G07-2" terminal of TCM connector.
Is each resistance 1 Ω or less? |
Go to Step 2. |
"WHT" wire circuit or "RED" wire circuit open or high resistance. |
| 2 |
- Disconnect connectors from ECM.
- Check for proper connection to ECM at applicable terminals.
- If OK, measure resistance between "E61-32" terminal of ECM connector and "G53-9" terminal of BCM connector, between "E61-33" terminal of ECM connector and "G53-1" terminal of BCM connector.
Is resistance 1 Ω or less? |
Go to Step 3. |
"WHT" wire circuit or "RED" wire circuit open or high resistance. |
| 3 |
- Turn ignition switch to ON position.
- Measure voltage between "G53-9" terminal of BCM connector and vehicle body ground, between "G53-1" terminal of BCM connector and vehicle body ground.
Is each voltage 0 - 1 V? |
Go to Step 4. |
"WHT" wire or "RED" wire in shorted to power circuit. |
| 4 |
- Turn ignition switch to OFF position.
- Measure resistance between "G53-9" terminal of BCM connector and vehicle body ground, between "G53-1" terminal of BCM connector and vehicle body ground.
Are they infinite? |
Substitute a known-good BCM and recheck.
If BCM is OK, substitute a known-good TCM and recheck.
If TCM is OK, substitute a known-good ECM and recheck. |
"WHT" wire or "RED" wire in shorted to ground circuit. |