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128 Psid 201

This document provides diagnostic information for a Volvo vehicle, including a fault code of 128: Engine ECU and 201: Data link, MID187. It describes a fault mode where the engine control unit detects missing communication with the vehicle control unit over the CAN/J1939 bus. This can cause issues like a red central warning light, buzzer, and error message screen. Possible causes of the fault include open or short circuits in the bus communication cable harness or control link. The document provides an action code of 3021 128 SID231 to address the issue.

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Naing Min Htun
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7K views1 page

128 Psid 201

This document provides diagnostic information for a Volvo vehicle, including a fault code of 128: Engine ECU and 201: Data link, MID187. It describes a fault mode where the engine control unit detects missing communication with the vehicle control unit over the CAN/J1939 bus. This can cause issues like a red central warning light, buzzer, and error message screen. Possible causes of the fault include open or short circuits in the bus communication cable harness or control link. The document provides an action code of 3021 128 SID231 to address the issue.

Uploaded by

Naing Min Htun
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Volvo Guided Diagnostics

Date: Information Type:


11/17/2011 Diagnostics Fault Codes 128: Engine ECU 201: Data link, MID187
Profile:
EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB] EXC, EC290B LC (Volvo) [GB]
EXC, EC290B LC (Volvo) [GB]

MID128 Engine ECU;PSID201 Data link, MID187(128 PSID201)


128 PSID201

Reference

Fault mode diagnosis

Fault mode Detection conditions:The engine control unit (E-ECU) registers: that bus communication
FMI 9 is missing with V-ECU on CAN/J1939
Symptom: Possible causes:

 Red central warning  Open circuit on bus


 Buzzer sounds one time communication (cable harness)
 Error message screen  Short-circuit to voltage on control
link (SAE J1939)
 Short-circuit to frame ground on
control link (SAE J1939)
 Leads in control link (SAE J1939)
short-circuited to each other

Action 3021 128 SID231

Guided Diagnostics

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