DTC P2088 [ZJ, Z6]

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DTC P2088 [ZJ, Z6]

B3E010202000W08

DTC P2088 | Variable valve timing control circuit low
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DETECTION CONDITION

• If the PCM detects that the OCV drive current is less than the specification* when the OCV control duty target is approx. 100 %, the PCM determines that the variable valve timing control circuit low.
*: Detected specification value depends on the battery voltage.
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.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• OCV malfunction
• Connector or terminal malfunction
• Open circuit in wiring harness between OCV terminal A and PCM terminal 2AK
• Short to GND in wiring harness between OCV terminal A and PCM terminal 2AK
• Open circuit in wiring harness between OCV terminal B and PCM terminal 2AG
• Short to GND in wiring harness between OCV terminal B and PCM terminal 2AG
• 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 the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service 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 | INSPECT OCV CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the OCV connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 8.
No | Go to the next step.

4

INSPECT OCV CIRCUIT FOR SHORT TO GND
• Turn the ignition switch off.
• Inspect for continuity between the following circuits:

  - OCV terminal A (wiring harness-side) and body GND
  - OCV terminal B (wiring harness-side) and body GND

• Is there continuity?

Yes

Repair or replace the wiring harness for a possible short to GND, then go to Step 8.

No | Go to the next step.
5 | INSPECT OCV • Inspect the OCV. (See OIL CONTROL VALVE (OCV) INSPECTION [ZJ, Z6].) • Is there any malfunction? | Yes | Replace the OCV, then go to Step 8. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZJ, Z6].)
No | Go to the next step.
6 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 8.
No | Go to the next step.

7

INSPECT OCV CIRCUIT FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Inspect for continuity between the following circuits:

  - OCV terminal A (wiring harness-side) and PCM terminal 2AK (wiring harness-side)
  - OCV terminal B (wiring harness-side) and PCM terminal 2AG (wiring harness-side)

• Is there continuity?

Yes

Go to the next step.

No | Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8 | VERIFY TROUBLESHOOTING OF DTC P2088 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [ZJ, Z6].)
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [ZJ, Z6].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [ZJ, Z6].)
No | DTC troubleshooting completed.