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DTC P0122 [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))

BME010200100W15

DTC P0122 | TP circuit low input
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DETECTION CONDITION | • If PCM detects TP sensor voltage at PCM terminal 40 below 0.16 V after key to ON, PCM determines that TP circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
POSSIBLE CAUSE | • TP sensor malfunction • Connector or terminal malfunction • Open circuit between TP sensor terminal B and PCM terminal 40 • Short to ground circuit between TP sensor terminal B and PCM terminal 40 • Open circuit between TP sensor terminal C and PCM terminal 33
• Short to ground circuit between TP sensor terminal C and PCM terminal 33
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY CURRENT INPUT SIGNAL STATUS - IS CONCERN INTERMITTENT OR CONSTANT • Connect the PCM connector. • Turn the ignition switch to the ON position (Engine off). • Check voltage at PCM terminal 40 while gradually depressing accelerator pedal. • Is voltage below 0.16 V? | Yes | Go to the next step.
No | Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [AJ].)
4 | CLASSIFY TP SENSOR OR HARNESS MALFUNCTION • Disconnect TP sensor connector. • Connect a jumper wire between TP sensor terminals B and C (harness-side). • Check voltage at PCM terminal 40. • Is voltage above 4.9 V? | Yes | Go to the next step.
No | Go to step 6.
5 | CHECK TP SENSOR CIRCUIT FOR OPEN • Turn the ignition switch off. • Check continuity between TP sensor terminals B and C (part-side). • Is there continuity? | Yes | Check for poor TP sensor connector terminal C connection. Repair or replace as necessary, then go to Step 9.
No | Replace TP sensor, then go to Step 9.
6 | CHECK POWER SUPPLY CIRCUIT VOLTAGE AT TP SENSOR CONNECTOR

  Note

  • If DTC P0107 is also retrieved with P0122, then go to CONSTANT VOLTAGE troubleshooting procedure.

• Turn the ignition switch to the ON position (Engine off).
• Check voltage at TP sensor terminal C (harness-side).
• Is voltage within 4.5- 5.5 V?
Yes
Go to the next step.
No | Repair or replace open circuit between TP sensor connector terminal C and PCM connector terminal 33 (harness-side). Then, then go to Step 9.
7 | VERIFY TP SIGNAL CIRCUIT FOR OPEN • Turn the ignition switch off. • Check continuity between TP sensor terminal B (harness-side) and PCM terminal 40. • Is there continuity? | Yes | Go to the next step.
No | Repair or replace suspected harness, then go to Step 9.
8 | VERIFY TP SIGNAL CIRCUIT FOR SHORT TO GROUND • Check continuity between TP sensor terminal B (harness-side) and body ground. • Is there continuity? | Yes | Repair or replace suspected harness, then go to Step 9.
No | Go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0122 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the ignition switch to the ON position (Engine off). • Clear the DTC from the PCM memory using the WDS or equivalent. • Is same DTC present? | Yes | Replace PCM, then go to the next step.
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [AJ].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
No | Troubleshooting completed.