Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)
52. Measure voltage between body ground and ECM/PCM connector terminal A21.
Is there about 5 V?
YES - Go to step 59.
NO - Go to step 53.
53. Turn the ignition switch OFF.
54. Disconnect the 3P connector from each of these sensors, one at a time, and measure voltage between body ground and ECM/PCM connector
terminal A21 with the ignition switch ON (II).
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Manifold absolute pressure (MAP) sensor
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CVT driven pulley speed sensor (CVT)
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CVT speed sensor 1 (CVT)
Is there about 5 V?
YES - Replace the sensor that restored 5 V when disconnected.
NO - Go to step 55.
55. Turn the ignition switch OFF.
56. Disconnect the 3P connector from the following sensors.
-
Manifold absolute pressure (MAP) sensor
-
CVT driven pulley speed sensor (CVT)
-
CVT speed sensor 1
57. Disconnect ECM/PCM connector A (31P).