Civic L4-1.8L CNG (2008)
Is there continuity?
YES - Go to step 74.
NO - Go to step 75.
74. Continue to check for continuity between PCM connector terminal B18 and body ground, while disconnecting these connectors, one at a time:
-
IMT actuator 5P connector
-
EOP sensor 3P connector ('07-08 models)
-
Input shaft (mainshaft) speed sensor 3P connector
Does continuity go away when one of the above sensors is disconnected?
YES - Replace the sensor that caused an open when it was disconnected.
NO - Repair short in the wire between the PCM (B18) and the IMT actuator, the EOP sensor ('07-08 models), or the input shaft (mainshaft) speed
sensor.
75. Check for continuity between PCM connector terminal C12 and body ground.
Is there continuity?
YES - Go to step 76.
NO - Go to step 77.
76. Continue to check for continuity between PCM connector terminal C12 and body ground, while disconnecting the throttle body 6P connector.
Is there continuity?
YES - Repair short in the wire between the PCM (C12) and the throttle body.
NO - Replace the throttle body.
77. Check for continuity between PCM connector terminal A25 and body ground.