B1232
| B1232 |
Lead connected to central warning lamp, short circuit to battery positive (lead connected to control module pin 1).
| Cars with central warning lamp |
| 1. |
Make a note of the diagnostic
trouble code and then clear it. Switch the ignition off and on again, wait for at least 40 seconds
with the ignition switched on and check to see whether the diagnostic trouble code
recurs.
If it does, it is a permanent fault. Proceed to point 2. If it does not, the fault is intermittent. Leave the ignition switched on and jiggle the connectors and wiring to check for an open circuit/loose contact. Note whether the SRS lamp starts to flash again. If it does, check to see whether the diagnostic trouble code has recurred. |
|
| 2. |
Unscrew the steering wheel airbag and unplug the connector at the back of the
airbag. Connect reference resistor 84 71 153 to the connector.
On cars with a passenger airbag, remove the glove box, unplug the connector on the underside of the passenger airbag and connect reference resistor 84 71 153 to the connector. |
|
| 3. |
Unplug the connector at the control module and connect a BOB. Unplug the
connector behind the instrument unit, switch on the ignition and take a voltage reading across
pin 1 and a good grounding point.
If the reading shows battery voltage, the fault is in the wiring between the instrument unit's connector and the control module's connector. Investigate the cause and remedy the fault.
If the reading shows no voltage, proceed to
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