Need some help diagnosing this code

tweiss3 · 08-30-2010, 09:06 PM

91 non turbo. Code is 09

From what i can see that is water thermo sensor. I just replaced the thermo sensor with mazda OEM to get rid of this code. What else could it be. Yes i disconnected the battery.

RotaryDiagnostics · 08-31-2010, 06:06 AM

Check for continuity or shorts in the wire from the sensor to the ECU. Check voltage at pin 2E of the ECU according to the factory service manual.

tweiss3 · 08-31-2010, 06:41 AM

thanks, ill give that a shot. What page and section in the FSM was that?
I was agrivated that the FSM skipped troubleshooting code 09

FerociousP · 08-31-2010, 09:14 AM

check the connector too. I know a few instances where a pin backed out causing an open circuit.

tweiss3 · 08-31-2010, 08:46 PM

FerociousP, you are awesome. It was the connector, the pin backed way out. Now she starts in like 2 seconds instead of 25 seconds. And NO CODES, horay. Thanks for the quick responses everyone. Now on to titling it and registering it

Boosted FC · 09-01-2010, 07:24 AM

RCC ftmfw!!!

08-30-2010, 09:06 PM	#1
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	Need some help diagnosing this code 91 non turbo. Code is 09 From what i can see that is water thermo sensor. I just replaced the thermo sensor with mazda OEM to get rid of this code. What else could it be. Yes i disconnected the battery. __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

08-31-2010, 06:41 AM	#3
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	thanks, ill give that a shot. What page and section in the FSM was that? I was agrivated that the FSM skipped troubleshooting code 09 __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

08-31-2010, 09:14 AM	#4
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro iTrader: (2) Posts: 1,046 Rep Power: 18	check the connector too. I know a few instances where a pin backed out causing an open circuit. __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

08-31-2010, 08:46 PM	#5
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	FerociousP, you are awesome. It was the connector, the pin backed way out. Now she starts in like 2 seconds instead of 25 seconds. And NO CODES, horay. Thanks for the quick responses everyone. Now on to titling it and registering it __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

09-01-2010, 07:24 AM	#6
Boosted FC Rotary & Boost Addict Join Date: Feb 2008 Location: Dallas, Ga iTrader: (0) Posts: 203 Rep Power: 17	RCC ftmfw!!! __________________ '05 Copper 6s, '87 TII RX7...248whp & 224wtq @ 12lbs