2–546
6.
Pre-inspection work
• Check that the battery voltage is in the normal range.
7.
After-inspection work
• Clear all past DTCs.
• Check that no DTC is detected after test drive.
8.
Estimated failure factors
• GND short-circuit in exhaust brake drive signal line
• Malfunction of exhaust brake magnetic valve
• Malfunction of engine ECU
ENGINE (J05E)/TROUBLESHOOTING