Otc P1128: Map Sensor Signal Lower Than Expected; Otc P1129: Map Sensor Signal Higher Than Expected - Honda Civic 2002-2003 Service Manual

PGM-FI System
OTe Troubleshooting (cont'd)
OTC P1128: MAP Sensor Signal Lower Than
Expected
1. Turn the ignition switch ON (II).
2.
Check the
MAP
with the scan tool.
Is 54. 1 kPa (406 mmHg, 16.0 in.Hg), 1.6 V, or
higher indicated?
YES-Intermittent failure, system is OK at this
time .•
NO-Replace the
MAP
sensor .•
11-54
OTC P1129: MAP Sensor Signal Higher Than
Expected
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in neutral) until the radiator fan comes on,
then let it idle.
2.
Check the
MAP
with the scan tool.
Is 36.9 kPa (277 mmHg, 10.9 in. Hg), 1.1 V, or less
indicated?
YES-Intermittent failure, system is OK at this
time .•
NO-Replace the
MAP
sensor .•