Workshop Manual

6E–458
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P1299 - ETC Forced Engine Shutdown Mode (Cont'd)
Step NoYesValue(s)Action
19 1. Disconnect the MAP sensor.
2. Connect a test 5 volt reference circuit and the MAP
signal at the MAP sensor harness connector.
3. Observe the MAP reading on the Tech 2.
Is the MAP reading less than the specified value?(If no,
start with diagnosis chart for other sensors in the circuit
and see if 5V returns.)
— Go to Step 20 Go to Step 21
20 1. Check the MAP signal circuit between the PCM and
MAP ground circuit.
2. If the MAP signal circuit is open or shorted ,repair it
as necessary.
Was the MAP signal circuit open or shorted?
— Verify repair Go to Step 22
21 Replace the MAP sensor.
Is the action complete?
— Verify repair —
22 Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed.
Refer to
ON-Vehicle Service in Power Control Module
and Sensors for procedures.
And also refer to latest Service Bulletin.
Check to see if the latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
— Verify repair —