06

Trouble Code Number
- Scan tool 06
- General scan tool (none listed)
- MIL 46

Fault Message
- Charging System Voltage Too High

Background
- The PCM tries to maintain charging system voltage of between 13.2 and 15 volts.
- This code indicates that the battery voltage input is above the target charging voltage during engine operation and PCM efforts to regulate the generator field do not prevent the voltage from rising.

Range of Check
- Engine speed: 1500 r/min or more for approx. one minute
Set Condition
- Battery positive voltage does not drop even if the generator field current is controlled.

Probable Cause
- Generator internal shorted
- Generator field driver shorted to ground
- PCM failed