P1673
Description
ENGINE HOT LIGHT CONTROL CIRCUIT
Output Driver Modules (ODM) are used by PCM to turn on
current-driven devices needed to control various engine and transaxle
functions. Each ODM can control up to 7 outputs by supplying ground to
device PCM is commanding on. ODMs can diagnose each circuit
individually. If ODM output (ENGINE HOT light indicator driver
circuit) detects an improper voltage level, DTC will set.
Symptoms
You likely won't notice any drivability problems.
Causes
An improper voltage level has been detected on ENGINE HOT
light indicator driver circuit.
Solutions
Check for shorts or bad connections in ENGINE HOT light
control circuit.
Replace fuse.
P1629
Description
THEFT DETERRENT CRANK SIGNAL MALFUNCTION
Vehicle operation is disabled if incorrect key or starting
procedure is used. Vehicle Theft Deterrent (VTD) module enables crank
circuit to starter and sends a signal to PCM if correct key is being
used. If proper signal does not reach PCM fuel enable signal circuit,
PCM will not pulse injectors on, disabling vehicle, even if crank
circuit is by-passed. Signal should be between 40-60 Hz and is
measured using DC scale on DVOM.
Symptoms
Engine will not run
Causes
PCM detects incorrect signal on theft deterrent fuel enable
circuit.
Solutions
Check for faulty connection at TDS module.
Bypass VATs(92-99 only)
Replace VTD module.
Are these codes any thing I should worry about. They came up on my aeroforce the other Day I cleared them and they have not come back on. Now I have had a few really cold days where I have used my Remote start and then when I get in the car and put the key in to drive away the Security light stayed on till I shut the car off and used the key to start it. Now I have started my car many times witht the remote start and only twice has the Security light stayed on.
