(2)Trouble codes I need to know how to troubleshoot..
(2)Trouble codes I need to know how to troubleshoot.. Can someone help me trouble shoot these codes
P0332 Knock sensor 2 circuit low input (BANK2)
P0102 Mass or volume air flow circuit low input =(status engine conroller)
P0102 Mass or volume air flow circuit low input =(status MPHC)
THanks,
P0332 Knock sensor 2 circuit low input (BANK2)
P0102 Mass or volume air flow circuit low input =(status engine conroller)
P0102 Mass or volume air flow circuit low input =(status MPHC)
THanks,
Teching In
Joined: Dec 2001
Posts: 387
Likes: 0
From: Southern IN, USA
First - you have "tainted" the PCM with Edit. Are you 100% you have evaluated all the possible permutations of all the internal variables, and the effects on the external input variables? 
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P0332 - KS2 circuit
Page 6-1555 of 2K manual
This code is set when the PCM finds the KS input is outside of programmed boundaries. The engine must be between 1650 and 3000 RPM, warm, and running for more than 20 seconds, on the second consecutive occurance.
1. Inspect all PCM and KS harnesses for defects, corrosion or damage.
2. Check resistance of KS to ground; should be between 93 and 107K ohms. If not, remove intake manifold and inspect KS, and it's connections; if no probs., replace KS.
3. If resistance is within spec, measure AC voltage from KS while knocking on metal near KS. If a signal is indicated KS is OK, if not, replace KS. If a signal is found, test and confirm all wiring circuit continuity between KS and PCM.
4. Replace PCM
*****
P0102 MAF Low Frequency
Page 6-1416 of 2K manual
This DTC is set when PCM reads too low an airflow thru MAF as based on information from other sensors, and is set when engine is running, battery is charged (greater than 8 volts), and the MAF shows less than 10Hz for more than 1 second, on the second consecutive occurance. Both these codes will clear after 3 NON- consecutive aperance of the above conditions.
First inspect for a vacuum leak, a PCV leak, a bad PCV valve, dipstick or oil cap not tight.
1. Inspect all MAF and PCM connections for debris or damage.
2, With engine idling, and a scan tool, confirm MAF is below 10Hz. If so, check ENG SEN fuse, and then confirm for 5V at MAF signal wire and ground. If OK, continue below. IF MAF is above 10Hz, there has got to be an intake of unmetered air - see above, and also inspect ALL intake components.
3. Check for all continuity on MAF wiring between PCM and also to grounds, as indicated by schematics.
4. Replace MAF sensor.
5. Replace PCM.
Good luck!
***
P0332 - KS2 circuit
Page 6-1555 of 2K manual
This code is set when the PCM finds the KS input is outside of programmed boundaries. The engine must be between 1650 and 3000 RPM, warm, and running for more than 20 seconds, on the second consecutive occurance.
1. Inspect all PCM and KS harnesses for defects, corrosion or damage.
2. Check resistance of KS to ground; should be between 93 and 107K ohms. If not, remove intake manifold and inspect KS, and it's connections; if no probs., replace KS.
3. If resistance is within spec, measure AC voltage from KS while knocking on metal near KS. If a signal is indicated KS is OK, if not, replace KS. If a signal is found, test and confirm all wiring circuit continuity between KS and PCM.
4. Replace PCM
*****
P0102 MAF Low Frequency
Page 6-1416 of 2K manual
This DTC is set when PCM reads too low an airflow thru MAF as based on information from other sensors, and is set when engine is running, battery is charged (greater than 8 volts), and the MAF shows less than 10Hz for more than 1 second, on the second consecutive occurance. Both these codes will clear after 3 NON- consecutive aperance of the above conditions.
First inspect for a vacuum leak, a PCV leak, a bad PCV valve, dipstick or oil cap not tight.
1. Inspect all MAF and PCM connections for debris or damage.
2, With engine idling, and a scan tool, confirm MAF is below 10Hz. If so, check ENG SEN fuse, and then confirm for 5V at MAF signal wire and ground. If OK, continue below. IF MAF is above 10Hz, there has got to be an intake of unmetered air - see above, and also inspect ALL intake components.
3. Check for all continuity on MAF wiring between PCM and also to grounds, as indicated by schematics.
4. Replace MAF sensor.
5. Replace PCM.
Good luck!
Last edited by emarkay; Dec 21, 2003 at 07:08 PM. Reason: spelling
