YES : Check for poor connections or loose terminals at the alternator, the battery sensor, and the PCM. If the
PCM was updated, substitute a known-good PCM See PCM REMOVAL AND INSTALLATION or PCM
UPDATE , then recheck. If the PCM was substituted, go to step 1.
NO : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM UPDATE
or PCM REMOVAL AND INSTALLATION . If any other Pending or Confirmed DTCs are indicated, go to
the indicated DTC's troubleshooting.
DTC P16E4: ACG HIGH-TEMPERATURE
Fig. 339: DTC Troubleshooting Flow Chart (P16E4)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the general troubleshooting information See HOW
TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE
FUEL AND EMISSIONS SYSTEMS .
ο¬
This DTC is stored when the alternator temperature is high (about 320 Β°F
(160 Β°C) or more).
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P16E4 ACG HIGH-TEMPERATURE
1. Problem verification:
ο‘
1. If the temperature of the engine and the alternator is high, open the hood to cool the engine
compartment.
ο‘
ο‘
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
ο‘
4. Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC Pending DTC Freeze Frame
P16E4 ACG HIGH-TEMPERATURE
Is DTC P16E4 indicated?
YES : Replace the alternator See ALTERNATOR OVERHAUL or ALTERNATOR REMOVAL
AND INSTALLATION .
NO : Check the cause of the high temperature, and repair it.
DTC P2101: ETCS MALFUNCTION
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