Code 9 <<< How to Fix It !!!

[90civicrider]

Ami, I'm posting this so you can put in the How-To section, and i'v heard of a few people having this problem.
__________________________________________________ ________
Computers and Control System: Testing and Inspection
DTC 9 Crank Angle (CYL) Sensor Circuit
****Most Likely an electricle problem in the TDC/Crank/Cyl Sensor system.****

CODE 9 [#1 Cylinder Sensor Circuit
The CRANK sensor determins timing for fuel injection of each cylinder and also detects engine RPM. The TDC sensor determins ignition timing at start up (cranking) and when crank angle signal is abnormal.

The check engine light and ECU LED may come on indicating a system problem, when infact there is a poor or intermittent electrical connection. First, check the electrical connections, clean or repair connections if necessary.

-Check engine warning light has been reported on
-LED indicates code 9

-Turn off the ignition

-Remove hazard fuse in the main fuse box for 10 seconds (to reset ECU)

-Start Engine

**Is the check engine light on, and does it still indicate a code 9? **
NO Intermittent failure, system is ok at this time a testdrive may be necessary. Check for loose wires and poor connections at the distributer and C210 (round connection located at the right shock tower)
YES
-Stop engine
-Disconnect the 8P connector from the TDC/Crank/Cyl sensor
-measure resistance between the F & G terminal
-Is there 350-550 ohms? NO - Replace distributer assembly
YES
-Check for continuity to body ground on F & G terminals
-Does continuity exist? YES -Replace distributer assembly
NO
-Reconnect the connector
-Connect the PGM-F1 test harness only to the main wire harness, not to the ECU
-measure resistance between C1 terminal and C2 terminal.
-Is there 350-550 ohms? NO - Repair open in BLU/GRN and/or BLU/YEL wires
YES
-Check for continuity to body ground on C1 terminal
-Does continuity exist ? YES - Repair short in BLU/GRN wire between ECU (C1) and distributer connector
NO
-Substitute a known-good ECU and recheck. If symptom indicator goes away replace the oem ECU

[tbk49]

anything new to the car lately? i gotta give you a call and come check out your system

[amy@af]

ummmm, something about.....you could have PM me :finger:

j/k....i'm sure a lot of people are reading it here that would never think to look for it there