Tips and Precautions
Before Troubleshooting
1. Check applicable fuses in the appropriate fuse/relay
box.
2. Check the battery for damage, state of charge, and
clean and tight connections.
NOTICE
Do
Engine Compartment
VSA MODULATOR-CONTROL UNIT
AUXILIARY UNDER-HOOD
RELAY BOX
POWER MIRROR
DEFOGGER RELAY
PCM
RADIATOR FAN RELAY
ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CONTROL RELAY
ELD U
Connector Index
Identification numbers have been assigned to in-line connectors, junction
connectors, and terminals. The number is preceded by the letter ºC" for
connectors "G" for ground terminals
The exhaust emissions controls
include three systems: PGM-FI,
ignition timing control, and three
way catalytic converter. These three
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
comes out the tailpipe. The exhaust
emissio
NOTE:
Before you troubleshoot, record all freeze data and any on-board
snapshot, and review General Troubleshooting Information.
This code is indicated when PCM updating is
incomplete.
1. Update the A/T software in the PCM.
2. Check whether the DTC P16CO is indicated in the
DTCs/Freeze Data