Acura RL (1996-2004 year). Manual — part 375
Manifold Absolute Pressure (MAP) Sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P0106: A range/performance problem (vacuum leak) in
the Manifold Absolute Pressure (MAP) Sensor system.
The MAP sensor converts manifold absolute pressure into electrical signals and inputs the PCM.
SENSOR
UNIT
— The MIL has been reported on.
— DTC P0106 is stored.
— Or from Probable Cause List.
Problem verification:
1. Do the PCM Reset Procedure.
2. Start the engine and keep
engine speed at 1,000 rpm for
1 minute with the transmis-
sion in Park or neutral.
Is DTC P0106 indicated?
NO
Check the MAP sensor output:
1. Stop the engine.
2. Turn the ignition switch ON (II).
3. Check the manifold absolute
pressure with the scan tool.
Does it indicate atmospheric
pressure?
YES
OUTPUT
VOLTAGE
YES
Check for vacuum leakage
between the MAP sensor and
throttle body.
Is there leakage?
NO
Replace the MAP sensor.
Check the MAP sensor output:
1. Stop the engine.
2. Turn the ignition switch ON (II).
3. Check the MAP with the scan
tool.
Replace the MAP sensor.
Does it indicate atmospheric
pressure?
YES
YES
NO
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Table of Contents
PGM-FI System
Manifold Absolute Pressure (MAP) Sensor (cont'd)
) (From page
Check for poor response:
1. Start the engine. Hold the
engine at 3,000 rpm with trans-
mission in Park or neutral until
the radiator fan comes on, then
stop the engine.
2. Start the engine.
3. Check the MAP with the scan
tool.
Is a MAP of 40.0 kPa (300 mmHg,
12.0 in.Hg) or less indicated within
1 second after starting the engine?
Replace the MAP sensor.
Replace the MAP sensor.
Check for poor response:
1. Start the engine. Hold the
engine at 3,000 rpm with trans-
mission in Park or neutral until
the radiator fan comes on, then
stop the engine.
2. Start the engine.
3. Check the MAP with the scan
tool.
Is a MAP of 40.0 kPa (300 mmHg,
12.0 in.Hg) or less indicated within
1 second after starting the engine?
YES
Substitute a known-good PCM
and recheck (see page
for
immobilizer information). If
symptom/indication goes away,
replace the original PCM.
The MAP sensor is OK at this time.
YES
NO
Main Menu
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The scan tool indicates Diagnostic Trouble Code (DTC) P0107: A low voltage (high vacuum) problem in the
Manifold Absolute Pressure (MAP) sensor.
— The MIL has been reported on.
— DTC P0107 is stored.
Problem verification:
1. Turn the ignition switch ON (II).
2. Check the MAP with the scan
tool.
Is approx. 0 kPa (0 mmHg, 0 in.Hg)
indicated?
YES
Check for an open or short in the
MAP sensor:
1. Turn the ignition switch OFF.
2. Disconnect the MAP sensor
connector.
3. Turn the ignition switch ON (II).
4. Check the MAP with the scan
tool.
Is approx. 0 kPa (0 mmHg, 0 in.Hg)
indicated?
YES
Check for an open in wire (VCC1
line):
Measure voltage between the
MAP sensor connector No. 1 ter-
minal and No. 2 terminal.
Is there about 5 V?
YES
Check for a short in the wire
(MAP line):
1. Turn the ignition switch OFF.
2. Disconnect the PCM connec-
tor D (22P).
3. Check for continuity between
MAP sensor connector No. 3 ter-
minal and body ground.
Is there continuity?
NO
Substitute a known-good PCM
and recheck (see page
for
immobilizer information). If nor-
mal MAP is indicated, replace the
original PCM.
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose wires at C252,
C254 (located at left shock tower),
C111 (MAP sensor) and PCM.
Replace the MAP sensor.
MAP SENSOR 3P CONNECTOR (C111)
Repair open in the wire between
PCM (D10) and MAP sensor.
Wire side of female terminals
Repair short in the wire between
PCM (D9) and MAP sensor.
NO
NO
NO
Main Menu
Table of Contents
System
Manifold Absolute Pressure (MAP) Sensor (cont'd)
The scan tool indicates Diagnostic Trouble Code (DTC) P0108: A high voltage (low vacuum) problem in the
Manifold Absolute Pressure (MAP) sensor.
— The MIL has been reported on.
— DTC P0108 is stored.
Problem verification:
1. Start the engine. Hold the
engine at 3,000 rpm with no
load in Park or neutral until
the radiator fan comes on, then
let it idle.
2. Check the MAP with the scan
tool.
Check for an open in the MAP
sensor:
1. Turn the ignition switch OFF.
2. Disconnect the MAP sensor
3P connector.
3. Install a juniper wire between
the MAP sensor 3P connector
terminals No. 3 and No. 2.
4. Turn the ignition switch ON (II).
5. Check the MAP with the scan
tool.
Is 101 kPa (760 mmHg, 30.0 in.Hg)
or higher indicated?
Check for an open in wire (SG1
line):
1. Remove the jumper wire.
2. Measure voltage between the
MAP sensor 3P connector ter-
minals No. 1 and No. 2.
Is there about 5 V?
Check for an open in the wire
(MAP line):
1. Turn the ignition switch OFF.
2. Install a jumper wire on the
PCM connectors between D9
and D11.
3. Turn the ignition switch ON (II).
4. Check the MAP with the scan
tool.
Is 101 kPa (760 mmHg, 30.0 in.Hg)
or higher indicated?
Substitute a known-good PCM
and recheck (see page
for
immobilizer information). If nor-
mal MAP is indicated, replace the
original PCM.
Intermittent failure, system is OK
at this time. Check for poor con-
nections or loose wires at C252,
(located at left shock
C111 (MAP sensor) and PCM.
MAP SENSOR 3P CONNECTOR (C111)
SG1
(GRN/WHT)
MAP
RED/GRN)
JUMPER WIRE
Wire side of female terminals
Replace the MAP sensor.
VCC1
(YEL/RED)
Repair open in the wire between
PCM (D11) and MAP sensor.
SG1
(GRN/WHT)
Wire side of female terminals
Repair open in the wires between
PCM (D9) and MAP sensor.
Is 101 kPa (760 mmHg, 30.0 in.Hg)
or higher indicated?
Main Menu
Table of Contents
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