Fault Codes

[Duk]

My SC MR2 is spitting out fault code 32, has any1 ever seen that b4

[old_mr2]

There is no 32 mate. Are you sure its not 3 and 2?

2 Pressure sensor signal Open or short circuit in pressure sensor.

3 Ignition signal. No signal from ignitor four times in succession.


For example, if you have error conditions 2 and 3 you would see the following on the check engine warning light when you short the two diagnostic connector terminals:

2 flashes - 2.5 second pause - 3 flashes - 4.5 second pause - 2 flashes - 2.5 second pause - 3 flashes - 4.5 second pause...





http://www.challoner.com/mr2/tech/diagnostics.html




Code Signal Diagnosis Common Trouble Area
12 RPM Signal No G or NE signal present for 2 seconds during cranking
Open G circuit
Open, short in G or NE circuit.
Distributor
ECU

13 RPM signal No NE signal for 50msec at 1000rpm.
Same as Above

14 Ignition No IGF signal to ECU for 4 consecutive IGT signal during engine running
Open/short in IGF/IGT signal from igniter to ECU
Igniter malfunction
ECU

21 O2 sensor Open/short in heater circuit of oxygen sensor for 0.5 seconds
Amplitude of O2 sensor reduced to 0.35-0.70V continuously for more than 60 seconds
O2 sensor
vacuum sensor
ECU


22 H2O temperature sensor no signal at THW
water temperature sensor
ECU

24 Intake Air Temp sensor no signal at THA
Intake air temp sensor
ECU

25 A/F Lean O2 sensor output in less than 0.45 volts for at least 90 seconds when O2 sensor is warmed and 1500 rpm or above.
open injector circuit
lack of fuel pressure
Ignition system
Vacuum sensor
O2 sensor
ECU

31 Vacuum sensor No signal at Vacuum sensor (PIM)
Vacuum sensor to ECU

33 ISCV (Idle speed control valve) Open or short in ISCV circuit
ISCV Valve

41 Throttle Position sensor No signal for 0.5 seconds or more at ignition ON. (VTA)
TPS
ECU

42 Vehicle Speed Sensor No speed sensor signal to ECU when loaded driving condition with engine speeds 2000 to 5000 rpm. for 8 seconds or more.
VSS
ECU

43 Starter No starter signal to ECU when cranking in TEST mode. Terminal STA on ECU
starter signal circuit
starter relay
ignition switch

52 #1 Knock sensor no KNK1 signal to ECU
knock sensor (looseness)
malfunctioning knk sensor

53 #2 Knock sensor no KNK2 signal to ECU
same as above

51 Switch condition signal Displayed when A/C is on when TE1 and E1 connected in test mode
A/C switch
Accelerator pedal, cable
ECU

[Duk]

Thanks for that. I didn't even know the MR2 had a pressure sensor Where is it located (and I thought I had decent base knowledge of my car )............. Cheers.

[old_mr2]

no idea mate, one of the other gze boffins may be able to help...