DTC P1608 [MZ-CD 1.6 (Y6) (EURO4 emission level)]

id0102g6850000

DTC P1608

PCM internal processor malfunction

DETECTION CONDITION

•  If the PCM detects any of the following conditions, the PCM determines that the internal processor has a malfunction.

―  Communication error between internal processors occurs 5 times

―  Communication error between function computer and monitoring module more than 2 times

―  When values of system timer inside CPU and micro controller TPU (Time processing unit) are compared 10 times, the maximum difference exceeds 81,000 µs more than 4 times, or the cumulative difference exceeds 81,000 µs

POSSIBLE CAUSE

•  PCM internal malfunction.

DTC P1608	PCM internal processor malfunction
DETECTION CONDITION	• If the PCM detects any of the following conditions, the PCM determines that the internal processor has a malfunction. ― Communication error between internal processors occurs 5 times ― Communication error between function computer and monitoring module more than 2 times ― When values of system timer inside CPU and micro controller TPU (Time processing unit) are compared 10 times, the maximum difference exceeds 81,000 µs more than 4 times, or the cumulative difference exceeds 81,000 µs
POSSIBLE CAUSE	• PCM internal 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 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.
2		No	Go to the next step.
3	VERIFY THAT DTC P1608 TROUBLESHOOTING IS COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. • Run the vehicle under the FREEZE FRAME DATA stored condition. • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6) (EURO4 emission level)].) Go to the next step.
3		No	Go to the next step.
4	VERIFY AFTER REPAIR PROCEDURE • Perform the after repair procedure. (See AFTER REPAIR PROCEDURE [MZ-CD 1.6 (Y6) (EURO4 emission level)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
4		No	DTC troubleshooting completed.