Once ICBC has opened a file on you and started an investigation of the matter, you might be tempted to stay in direct contact with them in order to get updates on your case. However, you should not, under any circumstances whatsoever, contact ICBC once you have retained a personal injury lawyer.
First, contacting ICBC could seriously harm your case. With even one seemingly harmless statement or question, you can undermine your own personal injury claim.
Second, you are now represented by a personal injury lawyer and it is unethical for ICBC to have any personal contact with you directly, regardless of the reason why they are contacting you.