DTC P0606 [L3 Turbo]

id0102b7809400

DTC P0606

ECM/PCM processor

DETECTION CONDITION

•  PCM internal CPU malfunction.

•  Abnormal voltage applied to PCM ignition switch terminal.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA is available.

•  DTCs are stored in PCM memory.

POSSIBLE CAUSE

•  Voltage of 1.0 V or more is applied to PCM ignition switch terminal (PCM terminal 1AY) even though ignition switch is off.

•  PCM internal CPU malfunction

DTC P0606	ECM/PCM processor
DETECTION CONDITION	• PCM internal CPU malfunction. • Abnormal voltage applied to PCM ignition switch terminal. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA is available. • DTCs are stored in PCM memory.
POSSIBLE CAUSE	• Voltage of 1.0 V or more is applied to PCM ignition switch terminal (PCM terminal 1AY) even though ignition switch is off. • PCM internal CPU malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform the repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY VOLTAGE AROUND PCM IGNITION SWITCH • When the ignition switch is off, verify that the voltage around the PCM ignition switch terminal (PCM terminal 1AY) is less than 1.0 V. Note • If the measured value fluctuates above and below 1.0 V, place the measurement position close to the PCM and measure several times. • Is the measured voltage less than 1.0 V?	Yes	Go to the next step.
3		No	Inspect the power supply line for open or short circuits, and repair or replace the malfunctioning part. Go to the next step.
4	VERIFY TROUBLESHOOTING OF P0606 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. • Start engine. • Is same DTC present?	Yes	Replace PCM, go to the next step. (See PCM REMOVAL/INSTALLATION[L3 Turbo].)
4		No	Go to the next step.
5	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE[L3 Turbo].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE[L3 Turbo].)
5		No	Troubleshooting completed.