DTC P0102[AJ (3.0L Duratec)]

id0102a4803200

DTC P0102

MAF circuit low input

DETECTION CONDITION

•  PCM monitors input voltage from MAF sensor when engine is running. If input voltage at PCM terminal 88 is below 0.23 V, PCM determines that MAF circuit has a malfunction.

POSSIBLE CAUSE

•  MAF sensor malfunction

•  Connector or terminal malfunction

•  Open circuit in wiring between MAF/IAT sensor terminal D and PCM terminal 36

•  Short to ground in wiring between MAF/IAT sensor terminal D and PCM terminal 36

•  Open circuit in wiring between MAF/IAT sensor terminal E and PCM terminal 88

•  PCM malfunction

DTC P0102	MAF circuit low input
DETECTION CONDITION	• PCM monitors input voltage from MAF sensor when engine is running. If input voltage at PCM terminal 88 is below 0.23 V, PCM determines that MAF circuit has a malfunction.
POSSIBLE CAUSE	• MAF sensor malfunction • Connector or terminal malfunction • Open circuit in wiring between MAF/IAT sensor terminal D and PCM terminal 36 • Short to ground in wiring between MAF/IAT sensor terminal D and PCM terminal 36 • Open circuit in wiring between MAF/IAT sensor terminal E and PCM terminal 88 • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded?	Yes	Go to next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Check for related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to available Service Information. • If vehicle is not repaired, go to next step.
2		No	Go to next step.
3	INSPECT MAF/IAT SENSOR CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the MAF/IAT sensor connector. • Check for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction?	Yes	Repair or replace terminals, then go to Step 7.
3		No	Go to next step.
4	INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect PCM connector. • Check for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction?	Yes	Repair terminal, then go to Step 7.
4		No	Go to next step.
5	INSPECT MAF SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT • Disconnect PCM connector. • Inspect for continuity between MAF/IAT sensor terminal D (harness-side) and PCM terminal 36 (harness-side). • Is there any continuity?	Yes	Go to next step.
5		No	Repair or replace suspected harness, then go to Step 7.
6	INSPECT MAF SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between MAF/IAT sensor terminal D (harness-side) and body ground • Is there any continuity?	Yes	Repair or replace suspected harness, then go to next step.
6		No	Replace MAF/IAT sensor, then go to next step.
7	VERIFY TROUBLESHOOTING OF DTC P0102 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory using M-MDS. • Start engine. • Perform “KOEO/KOER self-test” (See KOEO/KOER SELF TEST[AJ (3.0L Duratec)].) • Is same DTC present?	Yes	Replace PCM, then go to next step.
7		No	Go to next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE[AJ (3.0L Duratec)].) • Is there any DTC present?	Yes	Go to applicable DTC inspection. (See DTC TABLE[AJ (3.0L Duratec)].)
8		No	Troubleshooting completed.