Civic LX Sedan L4-1668cc 1.7L SOHC MFI (2001)
58. Check for continuity between ECM/PCM connector terminal A21 and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM/PCM (A21) and the MAP sensor, CVT driven pulley speed sensor (CVT), or CVT speed sensor
1 (CVT).
NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the
symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
59. Measure voltage between body ground and ECM/PCM connector terminal A20.
Is there about 5 V?
YES - Go to step 66.
NO - Go to step 60.
60. Turn the ignition switch OFF.
61. Disconnect the 3P connector from each of these sensors, one at a time, and measure voltage between body ground and ECM/PCM connector
terminal A20 with the ignition switch ON (II).
-
Exhaust gas recirculation (EGR) valve position sensor
-
Knock sensor
-
Throttle position (TP) sensor
-
CVT drive pulley speed sensor (CVT)
-
CVT speed sensor 2 (CVT)
Is there about 5 V?
