DTC U0100:68 [ACTIVE BONNET]

id0802f1003400

DESCRIPTION

Communication error with PCM (vehicle speed signal)

DETECTION CONDITION

Warning

•  Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the diagnostic procedure.

•  With the ignition switched ON, the active bonnet control module receives a vehicle speed signal error from the PCM for approx. 5 s or more.

POSSIBLE CAUSE

•  Malfunction in wiring harness between PCM and active bonnet control module

•  PCM malfunction

•  Active bonnet control module malfunction

DESCRIPTION	Communication error with PCM (vehicle speed signal)
DETECTION CONDITION	Warning • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the diagnostic procedure. • With the ignition switched ON, the active bonnet control module receives a vehicle speed signal error from the PCM for approx. 5 s or more.
POSSIBLE CAUSE	• Malfunction in wiring harness between PCM and active bonnet control module • PCM malfunction • Active bonnet control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE

•  Clear the DTC for the active bonnet control module using the M-MDS.
(See CLEARING DTC [ACTIVE BONNET].)

•  Perform the active bonnet control module DTC inspection using the M-MDS.
(See DTC INSPECTION [ACTIVE BONNET].)

•  Is DTC U0001:88 or U0155:00 displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)

(See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)

No

Go to the next step.

2

PERFORM DTC INSPECTION FOR PCM

•  Perform the DTC inspection for the PCM using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L8, LF].)

•  Is the DTC displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [L8, LF].)

No

Go to the next step.

3

PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE

•  Clear the DTC for the active bonnet control module using the M-MDS.
(See CLEARING DTC [ACTIVE BONNET].)

•  Perform the active bonnet control module DTC inspection using the M-MDS.
(See DTC INSPECTION [ACTIVE BONNET].)

•  Is the same DTC displayed?

Yes

Replace the active bonnet control module.

(See ACTIVE BONNET CONTROL MODULE REMOVAL/INSTALLATION.)

Go to the next step.

No

DTC troubleshooting completed.

Step	Inspection		Action
1	PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE • Clear the DTC for the active bonnet control module using the M-MDS. (See CLEARING DTC [ACTIVE BONNET].) • Perform the active bonnet control module DTC inspection using the M-MDS. (See DTC INSPECTION [ACTIVE BONNET].) • Is DTC U0001:88 or U0155:00 displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].) (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
1		No	Go to the next step.
2	PERFORM DTC INSPECTION FOR PCM • Perform the DTC inspection for the PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L8, LF].) • Is the DTC displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF].)
2		No	Go to the next step.
3	PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE • Clear the DTC for the active bonnet control module using the M-MDS. (See CLEARING DTC [ACTIVE BONNET].) • Perform the active bonnet control module DTC inspection using the M-MDS. (See DTC INSPECTION [ACTIVE BONNET].) • Is the same DTC displayed?	Yes	Replace the active bonnet control module. (See ACTIVE BONNET CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
3		No	DTC troubleshooting completed.