Dtc P0108 Manifold Absolute Pressure (Map) Sensor High Voltage - Daewoo CIELO EURO III Manual

table. The misfire counters may be used to determine
which cylinder(s) is misfiring.
Important: After repairs, use the scan tool BLOCK
LEARN RESET function to reset long term fuel trim to
128 (0%).
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Table.
1. The On-Board Diagnostic (EOBD) System Check
prompts the technician to complete some basic
checks and store the freeze frame and failure re-
cords data on the scan tool if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
2. This step will determine if DTC P0108 is the result of
a hard failure or an intermittent condition.
3. This step simulates conditions for a DTC P0107. If
the ECM recognizes the change, the
ECM, the 5 volt reference and the sensor signal cir-
cuits are OK.

DTC P0108 Manifold Absolute Pressure (MAP) Sensor High Voltage

Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check complete?
1. Install a scan tool.
2. Engine idling.
2
Does the scan tool display a Manifold Absolute
Pressure (MAP) voltage of the specified value or
less?
1. Turn the ignition switch OFF.
2. Disconnect the MAP sensor electrical connector.
3. Turn the ignition switch ON.
3
Does the scan tool display a MAP voltage of the
specified value or less?
1. Turn the ignition switch ON, with the engine OFF,
review the Freeze Frame data and note the
parameters.
2. Operate the vehicle within the freeze frame
4
conditions and Conditions For Setting the DTC as
noted.
Does the scan tool display a MAP voltage equal to
or greater than the specified value?
DAEWOO T-154 BL2,3
Action
ENGINE CONTROLS 1F – 104
5. This step also looks for an open in the sensor
ground circuit. If the circuit was open, additional
DTCs will also be set. If no other DTCs are set and
the circuit is found to be open, then the open must
be between the MAP sensor and the electrical con-
nector ground splice.
6. When the sensor signal circuit is shorted to battery
voltage, the TP will be displayed above 0% at all
times and A/C High Side will be displayed high. The
vehicle will also remain in Open Loop.
8. The MAP sensor vacuum source should only supply
vacuum to the MAP sensor. Check the vacuum port
for a restriction caused by casting flash.
9. Disconnect all sensors that use a 5 volt reference
one at a time while monitoring the short on the 5 volt
reference circuit. Replace any sensor that may have
caused the short on the 5 volt reference circuit.
12. The replacement ECM must be repro-
grammed. Refer to the latest Techline procedure for
the ECM reprogramming.
Value
–
Go to Step 2
85 kPa Go to Step 3
28 kPa Go to Step 5
85 kPa Go to Step 3
Yes No
Go to "On-
Board Diag-
nostic System
Check"
Go Step 4
Go to Step 6
Go to
"Diagnostic
Aids"