ap0640p0653fc

Check hydrogen sensors for proper operation

Type ap · topic 06.40 · version 0103 · 2020-01-17

Applies to: Model 253.99

Where it sits

Function group 1 Engine › 06 Fuel cell system › 06.40 Sensors — Series 253 (models 99*)

EinPAS 16 Fuel/power supply to engine › 16.15 Fuel cell › 16.15.12 Sensor/switch/wiring harness — Series 253 (models 99*)

AP06.40-P-0653FC

Check hydrogen sensors for proper operation

15.11.2019

Model

253.99

Check hydrogen sensors for proper operation

P06.40-2043-09

1

Hydrogen sensor 1 on fuel tank over rear axle

Check hydrogen sensors for proper operation

P06.40-2045-09

2

Hydrogen sensor 2 over fuel cell stack

Check hydrogen sensors for proper operation

P06.40-2044-09

3

Hydrogen sensor 3 in fuel cell exhaust air pipe

Danger

Risk of explosion when using a forming gas with incorrect mixing ratio. Risk of suffocation due to inhalation of forming gas. Risk of injury due to bursting of high-pressure hoses.

Wear safety glasses and protective gloves. No smoking or open flames. Work in well-ventilated rooms only.

AS83.00-Z-0001-02A

Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

Danger

Risk of explosion caused by escaping hydrogen or overheating of the fuel tanks when working on the hydrogen system. Risk of frostbite to body parts caused by escaping gas and by touching component parts carrying gas when emptying fuel tanks. Risk of asphyxiation caused by inhalation of air diluted by hydrogen. Risk of burn injuries by coming into contact with an invisible pale blue hydrogen flame.

AS00.00-Z-0030-01B

Topical note

Notes on fuel cell system

AH00.00-P-0022-01RFW

Topical note

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Check

1

Check hydrogen sensor 2 over fuel cell stack (2) for soiling and proper operation.

AP06.40-P-0652FC

2

Check hydrogen sensor 1 on fuel tank over rear axle (1) for soiling and proper operation.

AP06.40-P-0650FC

3

Check hydrogen sensor 3 in fuel cell exhaust air pipe (3) for soiling and proper operation.

AP06.40-P-0651FC

4

Calibrate hydrogen sensor 3 in fuel cell exhaust air pipe (3).

AP06.40-P-0655A

Referenced documents