DTC P0122[AJ (3.0L Duratec)]

id0102a4804200

DTC P0122

TP circuit low input

DETECTION CONDITION

•  If PCM detects TP sensor voltage at PCM terminal 89 below 0.17 V after turn the ignition switch to the ON position, PCM determines that TP circuit has a malfunction.

POSSIBLE CAUSE

•  TP sensor malfunction

•  Connector or terminal malfunction

•  Open circuit between TP sensor terminal B and PCM terminal 89

•  Short to ground circuit between TP sensor terminal B and PCM terminal 89

•  Open circuit between TP sensor terminal C and PCM terminal 90

•  PCM malfunction

DTC P0122	TP circuit low input
DETECTION CONDITION	• If PCM detects TP sensor voltage at PCM terminal 89 below 0.17 V after turn the ignition switch to the ON position, PCM determines that TP circuit has a malfunction.
POSSIBLE CAUSE	• TP sensor malfunction • Connector or terminal malfunction • Open circuit between TP sensor terminal B and PCM terminal 89 • Short to ground circuit between TP sensor terminal B and PCM terminal 89 • Open circuit between TP sensor terminal C and PCM terminal 90 • 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 TP SENSOR CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the TP 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 9.
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 9.
4		No	Go to next step.
5	INSPECT TP SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between TP sensor terminal B (harness-side) and PCM terminal 89. • Is there continuity?	Yes	Go to next step.
5		No	Repair or replace open circuit between TP sensor connector terminal B and PCM connector terminal 89 (harness-side). Then, then go to Step 9.
6	INSPECT TP SIGNAL CIRCUIT FOR SHORT TO POWER CIRCUIT • Turn the ignition switch to the ON position (Engine OFF). • Measure the voltage between TP sensor terminal B (harness-side) and body ground. • Is there voltage 0 V?	Yes	Go to next step.
6		No	Repair or replace short to power circuit between TP sensor connector terminal B and PCM connector terminal 89 (harness-side). Then, then go to Step 9.
7	INSPECT TP POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between TP sensor terminal C (harness-side) and PCM terminal 90. • Is there continuity?	Yes	Go to next step.
7		No	Repair or replace open circuit between TP sensor connector terminal C and PCM connector terminal 90(harness-side). Then, then go to Step 9.
8	INSPECT TP SENSOR • Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION[AJ (3.0L Duratec)].) • Is there any malfunction?	Yes	Replace throttle body, then go to next step.
8		No	Go to next step.
9	VERIFY TROUBLESHOOTING OF DTC P0122 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.
9		No	Go to next step.
10	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)].)
10		No	Troubleshooting completed.