Automatic Wipers always on

ICE, Equipment, Options
Ubuydvd
Posts: 9
Joined: Tue Jul 14, 2020 8:10 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by Ubuydvd »

calnorth wrote: Sun May 09, 2021 12:09 pm Am sure OBD tools can't do that. Perhaps a Nissan CONSULT tool might? The latter being at a Nissan dealer.

However, the Body Control Module (BCM) and Light & Rain Sensor (LR) together play a part here. An AUTO selection should give one wipe when no rain present. And Stop

AUTO should stop either by driver selection or go LO speed on LR sensor fault. It appears that BCM is being informed that its raining constantly?

Diagnostics shows:

Front wiper does not stop
AUTO only faults:
• Combination switch
• BCM
• Light & rain sensor (LR)
• Harness between light & rain sensor and BCM

A fault reported by the LR sensor will cause BCM to default to a Fail Safe mode...which places AUTO function working in LO mode. Perhaps its this that you are seeing?

Note that the internal room lamp relay feeds power to the LR sensor. A 10A fuse.
Thanks again for the help. I located the blown fuse replaced it and it’s all working again.
2016 Qashqai Tekna

Weedave111
Posts: 5
Joined: Mon Oct 11, 2021 4:24 pm
Qashqai Model: Still looking for one....

Post by Weedave111 »

Ubuydvd wrote: Sun May 09, 2021 8:06 pm
calnorth wrote: Sun May 09, 2021 12:09 pm Am sure OBD tools can't do that. Perhaps a Nissan CONSULT tool might? The latter being at a Nissan dealer.

However, the Body Control Module (BCM) and Light & Rain Sensor (LR) together play a part here. An AUTO selection should give one wipe when no rain present. And Stop

AUTO should stop either by driver selection or go LO speed on LR sensor fault. It appears that BCM is being informed that its raining constantly?

Diagnostics shows:

Front wiper does not stop
AUTO only faults:
• Combination switch
• BCM
• Light & rain sensor (LR)
• Harness between light & rain sensor and BCM

A fault reported by the LR sensor will cause BCM to default to a Fail Safe mode...which places AUTO function working in LO mode. Perhaps its this that you are seeing?

Note that the internal room lamp relay feeds power to the LR sensor. A 10A fuse.
Thanks again for the help. I located the blown fuse replaced it and it’s all working again.
Hi do you know which fuse it's under and where it is? Thanks
User avatar
gloucester
Posts: 5173
Joined: Sun Apr 03, 2016 7:04 am
Location: Gloucestershire, England
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

As noted above "Note that the internal room lamp relay feeds power to the LR sensor. A 10A fuse."

Image

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(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
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